Why Crowdsale contracts have been deprecated for 3.0?

Hello, I read that Crowsale.sol and related contracts have been deprecated for OZ3.0.

My guess is that there is an expectation that Crowdsales/ICOs will be replaced by IDOs / IEOs and similar managed platforms where the Crowsale contract is provided by the platform out of the box and transparently to the user.

However, I think there is still valid business cases for running your own ICOs, without IDO/IEO as they apply very high restrictions to the project owners.

Am I in the right path? WDYT?

There may be valid cases for ICOs. The reason the Crowdsale contracts was deprecated was that they didn't translate well to Solidity 0.6 after the introduction of overrides.

Any suggestions?
Many could be interested to check what most people use now to run their ICO,
also on other chains like BSC