It's not a "goal", it's a requirement (right there in the name!). Failing to comply to a government requirement subjects you to the associated penalties. They haven't said which requirement (we assume it's Russia Sanctions, of course), but their lawyers must have determined that the penalties would apply to them.
This doesn't involve financial transactions with Russian company or rendering of services for a Russian company.
I do not know. At least some explanation is due. But this shows how you can “uncontribute” to open source.