Yes, they wouldn't have been my first choice, but the pricing is attractive and the 3 months free covers my exit from my existing ISP.
They seem to have a decent support team, though surprised Open Reach have done the first visit yet..
I don't really need 500 Mb but why not, plus it'll give me a push to wire the house with ethernet and/or stick a mesh network in.
As I said whilst the performance of Stadia has been incredibly impressive and I tried XCloud too which is variable, some games seem unplayable, any other user on my FTTC massively impacts Stadia. Should help, appreciate latency is the main factor.