PBA – I’m unaware of any source that says not to do it, and only know one religious person who does.
Do you have any additional information to share?
‘Chadash Assur Min HaTorah”.
And the irony about this is that the Chasam Sofer was the one who said there is no reason whatsoever for MBP other than health, and that if doctors say it is more healthy one must use a sponge.