Maybe the ship has sailed, but I would prefer laypersons not associate the phrase "256-bit encryption" with anything, and would much rather one like "strong encryption practices" if it's a link to the technical specifications. They have no basis on which to evaluate what 256 bits of anything actually mean, so using it as a technical term to throw at their face intending for them to latch onto it as a valuable metric is actively harmful. What if it said "Strong 256-bit RSA encryption". To you and I that phrase should send off alarm bells, but a layperson might actually rank that as more secure because of the added technical jargon. You've just taught them to trust random technical-sounding security jargon so adding more jargon makes it sound more better.

It's probably way to late to make any difference here, but I still wish mozilla could push the boundaries here.