Think it's a bit exaggerated.
He had Covid twice and got a freak facial injury within the space of two seasons, which cost him around 20 games between them. Unless you think the global pandemic and Milan Skriniar smashing his face in are the result of some durability fault on his part, he's just been unlucky. Beyond that his injury record looks fairly normal, the only other noteworthy issue across five or so seasons having been dislocating his shoulder.
It's not quite the same sort of red flag as Martial/Jones style players who have tended to suffer from repeated muscle, tendon and ligament issues to their knees, ankles, hamstrings, etc. Typically when we talk about players being injury prone those are the sort of problems that keep repeating.