Bit tired of the, like I said... Not just him but starts to grate after a while
If you just imagine that a spirited back and forth happened on Twitter when Jason first announced the timeline, it makes a lot more sense.
I can only assume that his initial communication was followed but tons of disagreements, "but <influencer X> said..." statements, and people reframing his fairly straightforward message in ways that were more optimistic (i.e. "Jason Schreier said Starfield in 2022 🤩", which sorta makes it sound like it could be
anytime in 2022, rather than end of the year).
These things happen basically anytime Jason says anything, so his "I told you so's" are clearly aimed a specific audience, rather than chest-thumping in a void.