Fair! I'm speaking from a US perspective here for torx availability, and largely interacting with things I didn't get to decide the hardware on myself.
In addition to automotive it is all over appliances, electronics (eg hard drives), laptops, small electronic devices including smart phones.
The Husky toolkit I purchased from Home Depot 25 years ago included Torx bits.
Here is even a tamper resistant kit you can get at Home Depot: https://www.homedepot.com/p/Husky-Magnetic-Tamperproof-TORX-...
I am actually stupefied that someone can differentiate Philips from Pozidrive but isn't aware you can pick up a Torx driver set from any Walmart or Harbor Freight.
Just to show some data, go to home depot page and look at the screws categorized by drive style: I'm seeing ~2600 phillips heads, ~500 star (which appears to be torx under a different name), 55 square, and 27 torx (under the torx name).
Home Depot / Lowes is at least 50% torx screws these days. They're impossible to miss. Not sure where you're looking, but I'm talking about the actual physical store.
Especially if you look at screws intended for decking/lumber, it'll be an even higher % than 50.
That was the original comment, that is all I responded to - which is just a completely ridiculous.
And if you work on cars, you'll encounter the fasteners all the time.
But there's a very popular construction screw sold at Home Depot, etc that uses a "star" bit. The overall fastener selection at Home Depot isn't amazing, never has been - they've never been much of a hardware store. Check Grainger or something.