It's shame. After 10 years of bitcoin, still people think it as a ponzi scheme. It's more shame that Agarwal is thinking like that. I guess they are trying to create bad image of bitcoin among people.
Just because something has been existing for a while it does not mean it would inspire confidence in people's mind. Whether that thing is good or bad.
For example, US has had Trump for a few years now, does that mean he has gained legitimacy among his opposition (basically everyone with a functioning brain)? Nope.
While Bitcoin and Trump don't equate. One is good the other one is an orange pile of shit. But the argument holds I guess.