It's only silly or irrational if you believe that the only reason for the increase in price is because of Russia. The price of gas was going up well before Russia invaded. I can't have a real discussion with you unless you actually accept that fact.
Gas prices are going up everywhere, not just in the US, so this is likely bigger than just Biden, but that also does not necessarily excuse him from all guilt. We still have it cheap compared to the rest of the world. I don't usually complain about my first world problems.