Straw-man argument. I never claimed we would currently be better without him in the team. This nonsense that because we currently don't have a better option and as a result play worse without him, is justification that he can't severely be improved upon is laughable. Cavani is past it and was brought in as another option, whilst still scoring just as many goals as Martial despite barely playing football for god knows how long and struggling with fitness.
How has his general play or consistency improved? Has he significantly improved his movement off the ball, a clear issue with his game for years now? No. Has he improved his heading ability? No. Has he improved his hold up play significantly? No. The only thing you could maybe argue is an improvement to his finishing, but even then, bar the second half of last season, his finishing this season has reverted back to being extremely inconsistent and at times - poor.
He's simply not good enough. He has the ability, but the reason people compare him to Rashford is because unlike Rashford, he's stagnated as a footballer. He is better off the left IMO, but he will never take that position from Marcus who is continuing to improve as a player and is already a superior footballer imo.
You'd be fecking crazy to think he's even close to players like Haaland, Lewandowski etc. - the calibre of players we should be targeting as our main forward. He's 25 years old now, no longer a 'talent' and I haven't seen enough consistency to be confident he will ever be more than he currently is. A very good player on his day, who is too inconsistent to ever lead the line for a team that wants to win major trophies.