That bar is low. I'm not completely dismissing Sinclair, for what it's worth, but the point you keep missing is that we are no longer a club that needs to sign players who 'look ok' or are effectively an extra body to run around when our best players are tired.
Surely anyone we are bringing in now should be with a view to being a starter. That goes for Wildschut, Jones, Murphy, McGinty, Brown - all are clearly capable of being starters for us this season no doubt. If you're already conceding that Sinclair is ok as a bit part player then effectively you're conceding that he is not as good as someone in that role needs to be.
How about we sign a young kid on loan AND (if looking at another permanent) we go for someone who has the potential to push Matty Taylor all the way (or Baldock for that matter)? As I say, if that player is Jerome Sinclair, fair enough - but if (as it sounds even from you) that he is already deemed a stop-gap or temporary option to make up the numbers - surely we as a football club can and should do better?
It's interesting to me that I've seen Sinclair mentioned by one or two other sets of supporters as an option. Interestingly, there is an overlay with who else these fans are talking about - Sam Winnall (Walsall fwiw, possibly Scunny). I think that probably gives you a fairer reflection of where Sinclair is at this point (conversely I'm not seeing Wednesday or even Pompey or MK Dons talk him up as a possible signing).
Fully prepared to give any player a chance, but I suspect that if we sign Sinclair he'll end up being this seasons Sam Winnall (but perhaps on a lower wage).
I believe that as a football club we've moved on - as evidenced by Murphy et al.