Who doesn't get afforded this excuse ? Players who don't have the talent- like mctominay.
Rashford for example doesn’t while Sancho who hasn’t been any better since he joined does. Rashford broke through and impressed under LvG and was also among our best players after Bruno joined when for a while we had a half-functioning team.
Coincidentally, wasn’t it actually you who a few days ago mentioned how Rashford should be earning 40k as he plays like a 40 k player. So using the same calculator what in your opinion should Sancho (high transfer fee and on much higher wages than Rashford) should be earning?
I get that some players might impress more than other under certain conditions, but Sancho hasn’t impressed at all so far for United or England. And good players can impress a bit in not so ideal conditions as well (see Rashford in the past for England and United, or Foden, Sterling, Saka, etc. for England).
VdB also got afforded the system excuse and only now people are getting that he isn’t actually good.
Now Sancho is a better player than VdB and he may benefit from a better functioning team, better coaching and clearer instructions, but same applies to Rashford.