In reply to Rod Olman.

That is one of the questions being asked -- whether they will be deprecated. We are years out from a decision on that. These things are so fundamental to how themes work today that it will be a long while before that could really be discussed.

Also, the lead developers were open about 2022 not being a set-in-stone date to remove the classic editor. When they evaluate whether to formally deprecate or remove it, I think they'll push the date back. I'm not seeing the trends that would support the original deadline.