There is definitely a demand issue for Russian gas. The EU will want to avoid funding Russia with gas profits. I am not so sure about the total world demand given that large swings in preference are possible. However as oil demand drops due to EVs both gas and oil will see decline in profits.
I suspect to shift to EV will be faster than projects I have seen. Battery prices continue to decline for a given range plus the infrastructure will bd built out for charging. Assuming batteries price declines to are 1/4 of todays price and energy density fully covers large trucks and high demand use cases, the conversion will likely be 1oo% by 2030.
So yes Russian fossil fuel profits will drop significantly. So less to spend on missiles aimed at the USA.