To what extent could it be acceptable?

They should have a Marxist ideology that is friendly to a large part of the population or marginalized groups in order to achieve relevance.

Adapt new technologies to their ideology and not come into conflict.

An ideology has to evolve over time in order to remain relevant to the generations that come and go from time to time. If you don’t do that, you will stagnate with a small group of people.

To gather more people, you have to find a common ground of the groups that are marginalized from society at that time, and you have to lead them to achieve that goal.