Especially those "bitcoin sidechains" are the least worthy of any support to be honest.
Those are all (or at least 'mostly') projects that have tried to either damage Bitcoin, steal its rightful crown by claiming they are the real Bitcoins or just confuse people and scum them.

At least among the many shitcoins, there are altcoins like GRIN which offer something different, have a goal and pretty often are the reason a new user is joining the community.