Memes

Its a common thing with the .ml to identity an issue and not act due to purity politics.

No? Marxists argue against purity politics all the time. "Left" anti-communism on the basis of existing socialist states not being perfect wonderlands is one of the biggest problems we have to tackle. Whenever a socialist country makes an error, or has not yet sufficiently advanced to the point of erasing problems caused due to uneven development, this is used as evidence that said socialist country is unworthy of support and therefore imperialist aggression is passively justified. MLs must relentlessly combat this.

Ask them about voting in primaries (pushing an existing party left or forming their own).

Rejecting electoralism as a viable path does not mean doing so on the basis of "purity," but practicality. Vote in the primaries all you want, the ML argument isn't that this will make you "sinful," but that it won't ever be capable of enacting the change that is necessary.

If I need to change a lightbulb 20 feet in the air, and you come with a 4 foot stepladder, the lightbulb isn't changing even if you get closer. You have to drive to the hardware store, buy the 20 foot ladder, take it back, set it up, and then change the lightbulb. The stepladder being closer doesn't actually mean it gets you closer to your goal, that path is a dead-end to begin with, you cannot raise that 4 foot stepladder to a 20 foot lightbulb.

We can do multiple things at once. Some for the short others for the long term.

Sure, and studying theory and applying it to our practice tells us what strategies actually work in the short and long term.