Anything which goes against the main ideals which make bitcoin what it is are very dangerous proposals, over the years users have proposed all kind of dangerous changes which fortunately have not occurred and we hope they never do, for example we have heard proposals about allowing to chargeback transactions with the excuse of recovering the money which is stolen by scammers, increasing the number of coins which will be mined and lately many users have proposed for bitcoin to go from POW to POS.
Yes, proposals that go against the main ideals of Bitcoin, such as allowing chargebacks, increasing the number of coins that can be mined, and changing from a proof-of-work (POW) to a proof-of-stake (POS) consensus mechanism, are generally considered dangerous as they can undermine the decentralized and trustless nature of the Bitcoin network. These proposals have been made in the past but have not been widely adopted due to the potential negative impact they could have on the network and its users.