Yes, but not for existing petitions:

"This new threshold applies only to petitions created from this point forward and is not retroactively applied to ones that already exist.

That's after half of US states successfully collected 25k+ votes on petitions to allow them to separate from US. Whitehouse copy/pasted same reply to all them, but figured that 25,000 is too easy for today's social media aware buggers and raised a quote.

A threshold clearly within the reach of the internet, when it has a desire to act.