Been shooting since I was 8, mostly 70-80# for years and years and years.... I'm now 57 and still shooting 60 walking out the doors cold.... ALL DAY LONG.
No shoulder issues, no issues what so ever from drawing a bow correctly, none, zero, nada.
I do NOT use my shoulder to draw the bow, nor do I 'muscle' the bow in any way. IF IF IF, you claim injury to shooting a bow, you are drawing it WRONG! End of story.
My surgeon has no clue how to draw a bow either, and my washing machine repair man has no clue how to do surgery. But they both play each other on TV.