Ruble is definitely not much stronger, it’s just practically frozen so it is not defined by free market rules, but by Russian government made ones.
It would be interesting to know the "real" rate to get the scope of the currency control.
Also, if you are an oligarch who plans to load your private plane with suitcases of dollars and fly to the Cayman islands, you are probably sanctioned, so that is out of question too.
There are two things holding the ruble high: 1. All exporters have to sell 80% of their FX income in 3 days 2. The import has shrunk dramatically and it's hard for people to travel to other countries (so individuals and businesses don't need that much cash to begin with)