False - the current alignment is not tenable (for the GOP) and they will eventually have to change.
Don’t pretend like Democrats have a tenable coalition post Biden. Don’t fool yourself.
You’ve made the classic strawman’s mistake of having read something that just isn’t there. Nowhere in the post you replied to did said post mention literally anything about the tenability of the Democratic coalition, let alone “pretend like Democrats have a tenable coalition post Biden.” They simply opined that the current GOP coalition isn’t tenable in & of itself.
Indeed, no coalition is tenable in & of itself in the long-term. The New Deal coalition was tenable... ‘til it wasn’t. Likewise, the Reagan Revolution’s coalition was tenable... ‘til it wasn’t. And so it’ll go with the next coalitions as it does with all coalitions, be they Democratic or Republican: they’ll exist... ‘til they don’t, at which point they respond to the changing times & adapt to fight another day & eventually come back. Of course, they still have to exist at least somewhat in the meantime, which is what the post you replied to was getting at in its opinion: that the GOP coalition as currently constituted is untenable for the time being so long as the GOP doesn’t respond & adapt to said untenability, & whether you actually have a legitimate response to what they were actually saying beyond “no u” still remains to be seen.