The poster addressed both of your points.

Your points seem to be:

1:People you've meet in the ML field don't talk much about AGI.

2: You don't believe that LLMs will lead to an AGI or a singularity.

This poster is saying that neither of those things matter if the trend of exponential technological growth continues. Technological growth will progress in a rapid and nonintuitive fashion such that things that seem possible in the next few hundred years could occur in just the next few decades.

It's true that trend is not guaranteed to continue, but it seems unlikely (at least in my mind, and clearly in others) that even significant economic or societal shifts could alter it's course.