It probably isn’t in the government’s interest to get rid of church tax-exemptions, so I suspect this is just loose talk by the left about eliminating another constitutional amendment that is not currently useful to them. And there’s been rumblings about this for at least a decade on the internet. It’s just a bit louder right now and will die back down. Still, it should be addressed.
The depiction of tax exemption of religious non-profits and churches as unfair is a bizarre view that would require assumption that all property naturally belongs to the state, and that allowing churches to keep the money they are given in donations is an act of largesse as opposed to a hedge against untoward influence of government.