Good point about the pin.

I'm looking at buying https://www.amazon.in/gp/aw/d/B0D3LK3DYX/ for my living room "diy steam machine".

I was waiting for the steam controller because it would let me play point and click games using it's touchpad and also do some light web browsing and even be useful in the desktop mode (like how it works now on my deck).

But with this playstation clone controller will i get the same functionality?

The Linux drivers for PS4/PS5 controllers actually do map the touchpad as a mouse by default. With clicking it mapped to mouse button left. Might have to manually load the drivers if the controller's USB vendor and product ID don't match Sony's.

For anything more complicated (or Windows), you'll probably need a remapper like Steam or sc-controller running.