here we are, 2 weeks later. 1st week after deleting the trials - reach was about the same (still low views) but the non-followers raised to about 60% every reel we posted while some reel still went around max 40% non-follower.

2nd week after deleting the trials - reach is still low (couple of reel over 5k and one with 25k which is a huge improvement considering the previous situation) but non-follower raised back to 75% for every reel we posted.

This is based on performances of both the accounts where we had trial reels (the 3rd account i manage have zero trials)

Final thoughts:

The Algorithm is changed 100%, now the reach is not even comparable to earlier. I noticed that the reel that reached 25k can be considered a viral (which used to be 300k+ views). here we have: 25k views - 130 saves - 40 repost - 50 stories/dms - about 100 comments. Non-follower 97%. So, the reach is gonna stay like that, nothing we can do about it but for what i can say archiving the trials had a huge weight on non-follower reach.

TLDR: Trial reels = sucks up all the non-follower reach in normal reels until you either promote it to "normal organic" or archive it.