I'm not a hater of TT, I'm just giving my personal experience in the 2 years of using their service. It is a genuine series of complaints that I have. The connection to show as Connected when no web pages are opening is something I have only experienced with TalkTalk!
There has never been another ISP that I have used that shows router setting as connected but none of the web pages or peer networking as working. I once had this experience for 50 minutes! No router reboot was fixing the problem as it was from their end.
You are only showing your happiness in terms of your speed test results. Speed is not everything. I also had 80/20Mbps much better tests than your 63Mbps but that doesn't mean overall I am happy with the service.
That's the problem with many of these positive reviews that you'll read online. I've read plenty of those 5 star reviews pointing how happy they are with the speeds they are receiving. It is not all about speed. It's about the latency, reliability of the connection keeping a hold of. The quality of the router, the packet losses, the customer service, the honesty of a company, etc.
I'm not denying that you may be happy with your speeds. But I'll be honestly surprised if you haven't experienced connection downtime while the router is being shown as connected and the lighting of the router being white!
This is not a problem unique to my particular location or area. Absolutely all of the customers throughout the country simultaneously report that their connections have gone down during the TalkTalk scheduled maintenance. This is the website I was looking at when I was a TalkTalk customer.
https://downdetector.co.uk/status/talktalk/
Everytime my service was down the graph chart was rocketing upwards and the comment section was full of people telling their same experience.
The router will show connected but not a single web page will open. Then again, I've also weirdly experienced situations where certain websites will not work due to TalkTalk server side and then they resolving because TalkTalk fixed the server side. This is not a problem I have experienced with another ISP.
BT is far better than TalkTalk imho. If I was just a complaining machine by nature I would've criticized BT as well, but it really is a better service than TalkTalk. Now I can't comment on FTTP as I don't have FTTP. Perhaps TalkTalk as a service on Openreach FTTP and CityFibre do perform better. But then again I also don't know if their service goes down together with their maintenance.