I think they’re doing it wrong and I really don’t get it tbh.
If you read posts about bike fits, some above and others in previous threads, people appear to get them done then go and ride the adjusted bike, only to then complain that it feels all weird. They then move it back to how it “feels right”, which is basically how it was before as the muscles are trained in that position.
If people only have the adjusted bike a go then they may actually get the benefit once they get used to it.
Ironically, others then say that nothing much was changed so aren’t happy. It’s likely that these people were close to their ideal position. I do sympathise with this group though, as I get how it could be disappointing.
What I do find ironic is that one group complain that their bike feels different when adjustments are made, whilst the other group are disappointed that said changes weren’t made.