I find it funny that evolution of bikes is bringing us back to thinking flexstems and drop bars on mountain bikes (Tomac style) are a good idea.
Bikes evolve and sometimes these evolutions go in circles, but I for one am glad that bikes have moved out of their pigeonholes, recognising that riders want more versatility. Downhill bikes have been (at least in part) superceded by enduro bikes, recognising that people want to ride up to the top of the descent and most can’t (or would rather not) rely on an uplift to get them there. Likewise, pure MTBs, which being great on certain terrain, are pretty bloody terrible on the road, so we have gravel/cx/adventure/touring/hybrid/whatever bikes making a (re)appearance to fill a gap. No, they won’t work on all terrain, yes the manufacturers want to sell more bikes, but that doesn’t mean they are a bad idea, nor that they aren’t fun to ride.
I’m doing a long ride in July which is 80% road, and 20% off-road. I certainly don’t want to slog around it on my XC bike, but the rough bits aren’t going to do any favours to my 25mm tyres on the road bike, so a middle ground works really well here. I could take a tarmac diversion, but I’ll miss some of the nicest bits of the ride if I do and this seems to miss the point of cycle touring.
My trip home from work takes me around 2 hours and is 95% offroad, on a mix of gravel, dirt and towpath and I reckon I’m at least 25% quicker on the gravel bike than on the MTB. I need to work hard to get that, but it’s fun and quick and that’s what counts!