Opening a Minecart with Hopper provokes Piglins, even though opening a Hopper doesn't provoke them

It's expected that Hopper and Minecart with Hopper are treated the same by the Piglins. But when a player opens a Minecart with Hopper, the Piglins are provoked, unlike when a Hopper is opened.

What I expected:

Piglins don't attack me when I open a Minecart with Hopper.

What actually happened:

They attacked me.