I'm actually really happy with the average age of the companions this time, with everyone between 30-50 and Cole being the sole exception that passes for anything less than 25. I'm in my 30s now and crave for something different from the same old nubile naive young hero coming of age stories, so being able to play a more adult hero and be surrounded by a group of companions overall more well lived, more mature, people who actually know what they're doing for a change, it's very refreshing.
As for Blackwall and Solas... well, there is some truth to that thing about men in their 30s preferring women in their 20s, and women in their 30s preferring men in their 40s.
I would have felt super awkward shipping, say, someone like Cousland who is obviously very young to an already middle-aged Alistair, in example, but since all my PCs will be 30-something this time around (maybe this is where I self-insert after all?), I feel very comfortable having them dating hot daddy elf and hot daddy bara in their 40s.
Cullen I place somewhere around 34~38, so with my Trevelyan being 30~33 too, it's all good.