Yep a common liberal talking point during the elections is "my opponent is too inexperienced to lead". It is a fine talking point, and rings true no thanks to the fact that liberals obviously dont care to cultivate future socialist leaders on their staff (or otherwise).

Of course it doesn't matter, given that liberals are so experienced at doing a garbage job at leading! There is more to it than experience alone!

I remember there was a Hakim video where he was discussing "what should one do if they want to 'be a good socialist' or something like that?"

Well first, join a socialist party and get to work, if that isn't a good fit for you, then organize some other way in your work place or community. You can also (instead of or in addition to the previous) develop professional skills that fundamentally support society. There will still be a need for civil engineers, medical professionals, equipment technicians, bus drivers etc.... after the revolution. if your politics are on point your knowledge will be all the more useful.

Same goes for leadership skills imo