Interesting! I assumed all modern ovens are pretty much convection these days but I guess the tech doesn't make sense across the pond (for whatever reason?)
From what I mean before, it's basically unheard of to buy a single oven without it being a convection oven: https://www.johnlewis.com/browse/electricals/cooking/built-i... -- If you buy a double oven then the top one will likely be a "traditional" oven (mine is like this).
Downside with convection ovens is the heating element can shit the bed if you manufacturer skimps out on the thermal cycling. Had to replace mine yesterday after only 5 years of daily use, but was a quick 5 min job and £15.