Glad they're taking off the gloves a little, but it's always been a non-option to just make our lives significantly and irrevocably better like M4A or the PRO act and although they're good at trying and failing, they never talk about the consequences as dire as they actually are with few exceptions.
I disagree. You'll never convince enough people to pursue this strategy to matter because it involves making your material position dramatically worse for some unknown but probably very extended period of time. If MAGA rules for the next 2 decades there won't be any way for leftists to gain power even if that did somehow result in enough people joining you. They are already moving quickly to end democracy in the US.
I think if you want to make third parties viable there needs to be electoral reform, which will have to happen with the consent of at least one of the two existing parties. Or you pursue politics outside of electoralist strategies. Which is my view, and is a much more effective way to get concessions from the existing parties anyway.