Does faking MRR really help a business grow? [mini-case study example]

This is rooted in psychology.

When you show that there is enormous interest in something, a crowd of people will flock and want to see it.

I woke up this morning, and X was full of this message:

"We launched 3h ago and hit $1M ARR just now."

Some were confused, others claimed that it was a good marketing trick.

Apparently, it was a false statement, but such marketing had almost 1M views. Distribution is good.

The question is:

Will it damage the brand's reputation too much? (if it's not true)?

And maybe an additional question – what if a harmless lie that is supposed to create a sensation really helps the hype so much that people start buying things for real?

I often see this on social networks as well, when the "impression of popular posts is created.)