There are no plans to obey any sanctions from either side as far as I know. Not even banks will have much to say, thanks to the support for cryptocurrency payments. Then there's the privacy aspect, since no personal information is shared with the data center operator, they won't even know that you are visiting from Russia.
One problem however could be a nationwide disconnect from the worldwide internet. This could limit your access to some services in certain locations. TOR and VPN are recommended workarounds in that case, both are supported and allowed.
There are also local api endpoints available, with a pretty solid backbone connection spanning across the world, with front end servers in multiple locations: https://www.99stack.com/resources/docs. For instance
api.as.99stack.com takes you to api servers in Asia which are more likely to be accessible from Russia, than European and American api servers.