I don't see how. For want of better statistics, the impact of attacking players was always "measured" in goals and assists. Messi edges Cristiano in this area over his career while Cristiano bests him in a small definition range of huge importance, namely knockout matches in the CL. Anyway, with Messi his goals and assists are a byproduct. He doesn't play for them, they just happen when he does his thing. While Ronaldo moved further up the pitch and participated less overall as his career went on, Messi still drops deep and is usually the player most important in the build up of attacks for his team. This also reflects in more advanced stats.
As a result, Messi is held to Ronaldo's standards (goals + assists) while Ronaldo isn't held to Messi's (overall contribution, initiating of attacks, etc.). I think this is why many CR7 fans try to keep the discussion simple and superficial. But if you have to oversimplify the topic to get to your desired outcome, you're doing it wrong. Then you're just looking for ways to confirm an opinion that you already made based on personal preferences, not on arguments.
This is why I don’t rate him because he always had that Barcelona team ability to control the ball behind him.
At Messi’s best - he had Iniesta and Xavi capable of playing a type of football that was 100% copy of what the Spain national team played - it showed that Messi was more an icing to the Spanish cake rather than the core ingredient that made it work.
Trophy upon trophy when Xavi and Iniesta were both around - once they left; Messi’s trophies suddenly became less common - smaller trophies, semi finals instead of wins.
Even now - Barcelona are a shadow of their older self but still has a core philosophy they try to keep with possession as much as possible from the de jong to the pjanic to the pique at the back who still plays.
Messi always had this possession type team whether they were good or bad playing behind him.
He didn’t have to adapt as you said to get his goals or assists - because he didn’t need to. Not only did he play in a very skill dominant dribbling dominant league for all his career (compared to Ronaldo moving from PL to La Liga to Serie A) - he played in one of the most possession held teams ever giving him a support beside him.
People have this assumption that if Messi had for example played for Chelsea under Mourinho (during our Ronaldo’s United period) or even a city under Mancini that he would be putting up the performances, assist and goal numbers he did all his career at Barcelona with so much possession based stature and ability played behind and beside him. I wouldn’t have said he would be useless, he would be great player - but him being called a GOAT simply would not have happened.
Ronaldo on the other hand - even if winning with a Juventus is nothing new or great - it’s the fact that he could adapt to any team, any league and any opposition of so many different style and tactics while still coming out a winner is why he is my GOAT. Messi could only really do it for Barcelona when Barcelona during his period is regarded one of the best teams of all time which was then replicated by Spain National team winning their first World Cup wins and winning consistent euros during that era too. Argentina and Messi was not even close to winning a copa America during that time.
In a more simple term - in my eyes C Ronaldo spending his whole career at Barcelona with all that team philosophy, possession and ability behind him would have been putting Messi numbers to rather than having to adapt and play his game at sporting Lisbon, Manchester United, Real Madrid,Juventus and Portugal. Do I think Messi would have been regarded as high as the player he is at Barcelona if he had to adapt his game to play with Sporting Lisbon, United, Real Madrid,Juventus and Argentina - then not a chance.
On the other side when you remember how many inverted cut goals David Villa played (one of my favorite players) and even a right footed Pedro at the Barcelona peak - you wonder how C Ronaldo would have done in such a team in place of David Villa.
The best example of this is Neymar - looked a different player playing with the ability and possession philosophy of Barcelona consistently playing behind him and setting him up. At PSG - he is not as fearesome as he once seemed to be at Barcelona in La Liga.