Seems a bit of a stretch.

Have US energy firms with interests in fracking been opportunistic about this crisis?

Umm..... yes.  Without doubt.

Republicans in the US Congress are trying to fast track approval for a LNG export facilities that would be able to move enough LNG to replace Russian gas exports to Europe.  Even with massive investment, this is several years off.  But this would jack up the North American price of gas tremendously. Right now, in order to export gas a special permit is required if the receiving country doesn't have a free trade agreement with the US.  The bill in Congress would essentially remove this.

Again, look at the price differential between North America, Japan, and the EU here:

I think it's stretch to not see a massive increase in North American gas prices, and company profits, as not being a motivation behind Washington's actions.

And I'll give my consent to any government that does not deny a man a living wage-Billy Bragg