First, I've been reading a lot of Peter Zeihan lately, and it's fascininating. Currently on his 2nd book "The Absent Superpower," and it's really interesting. Has a Chapter on the current Russian aggression, however the book was published in 2018. See anything he's put on YouTube lately.
Second, when we finally have an executive administration again that isn't beholden to the religious zealotry of the climate change types, the tap will get turned on again as far as domestic oil and gas. Any sane person could easily see the need to increase domestic gas production to feed local NatGas plants as a way of reducing emissions, but since the followers of the Church of the Swedish Teenager aren't known for actually thinking, we just have to deal with the octogenarian houseplant who's unable to either answer questions or tweet on his own. Give it time.
In the meantime, assuming continuous Legacy, Freight, and LCC hiring like we're seeing now, the only way that Legacy carriers are going to be able to staff 76 seat feed (assuming they want to in lieu of E190 or A220 flying) is create a mechanism to accrue Legacy seniority while sitting in the flight deck of a CRJ / 175. First Legacy CEO to solve that issue wins, and likely each of the other Legacy carriers will follow shortly thereafter, then it'll be the LCCs back in the hot seat for hiring R-ATPs with a pulse.