Anyone who says Bitcoin is a Ponzi scheme technically doesn't understand the concept, use case, and reason for its creation.
When people don't understand the reason behind something, they intend to act foolishly, and even do it with confidence, not knowing they are naive. An example is what we once saw, Michael J. Saylor, Larry Fink, etc. Who once said negative things about Bitcoin before, and later accumulated it when they understood its concept.
Whenever we see this type of statement, let's know it is just another statement from someone who doesn't know anything about how Bitcoin works.
What do you expect people to say when you also make Bitcoin to look like a ponzi with the statement guaranteed high returns, when we should always advocate and make statements regarding the risk of losing your money and having to wait for a long term to get a return and possible profits, despite that Bitcoin is mostly seen to have been on an uptrend profits duamention for long but it doesn't mean that there is no high volatilities in it market, so let not assured high guarantee profit while investing in Bitcoin.
You technically don't read to understand the Op stance about the whole false statement, which s/he said someone claimed Bitcoin is a glorified Ponzi scheme.
The OP pointed out what makes a Ponzi scheme, and provided a Bitcoin definition, which stated something different.