This post is about a bug in the forum itself. I’m not sure what it’s officially called, but to the left of each post you see the poster’s name & Forza achievement total and “Driving Since” value.
Often times it has me shown as “Driving since 2018” though I’ve been a Forza fan since the very first one on original Xbox. Today I just noticed that everyone on an entire thread all said “Driving Since 2018” with exactly 1050 forza points. It would seem the value for one person’s GT is getting used to populate all people’s entries on a given thread.