What does nextdns do that pihole can’t?

Since none of them saw consequences, evidently it is.

That isnt the only illegal thing they did - far from it. Look up naked short selling.

MASSIVE oversimplification incoming

In 2020, evidence was brought to light that GME price was being artificially suppressed. A lot of people bought the stock at once, which would mean that those driving down the price would lose money, so the buy button for GME was turned off (at least on some brokers).

Nothing was done about the artificial suppression. It continues to this day. Forces other than supply and demand play a huge part in the price of a stock.

What does port forwarding gain you on a VPN? Sorry if the question is ignorant