Does google provide you support when something otherwise go wrong? No. Unless of course it's a pixel.

And I have a custom rom which gets update every month. Ungoogled. :)

The comparison you should be making isn't with Google, but Apple.

My experience with custom ROMs was unfortunately a lot worse than yours. I had the original Galaxy Note, and picking a custom ROM for that was a "Updated, has features, doesn't kill your battery - pick 2" kind of deal.

Not too different from MS not being first line support for your Thinkpad, but offering more for surface laptops.

I'm still under update coverage for my Pixel 2XL, haven't felt compelled to upgrade at all. i do wish more handsets supported using Lineage or another open variant/option for after coverage expires at least.

For updates, you hit the update button. When something goes wrong, same as others.