The world is full of bad advice. Asking an honest question isn't the problem, the problem is the plethora of bad advice that is given.
Issues arising from ingesting substrate are so rare that many exotic vets never confirm an actual case. There are real documented exceptions, but they are so rare they don't even merit this being an issue.
I have had snakes, big and small ingest large amounts of woody substrate over three decades without ever having a problem. I have seen snakes looking like a bad Guinness Book of World Records stunt for swallowing matchsticks they had so much crap in their mouths.
And I have never had an issue.
So in that context, people who screw around trying to coax, massage, masturbate or tweeze wittle woody bits out of their snakes mouth trying to prevent a non-event are courting real issues. Issues that are palpable and that can lead to serious consequences.
Regurges can be incredibly dangerous to a snake. If aftercare is botched, it can easily lead to a second regurge which can easily lead to death.
It can also put a picky eater off of feed.
Why put your snake at risk for something that is so rare (impaction from substrate ingestion) that most vets never treat it in practice?