The concerns are about the credit card you use to pay.

The argument is that they can associate the card with your searches.

As far as I know they don’t keep search data. I’m personally happy with them

AI in the product name or description makes sure that there is not a single chance I buy it.

It makes filtering products and companies easier

Haven’t really used the older models but the x1c line is decent imo. Also t14. Z line is also good but focuses on different crowd.

For Erlang I would say that the hard part is not the language itself (maybe a bit because it is influenced by prolog) but because of the mental model. Using concurrency and parallelism as core concepts of the language and understanding that you don’t need a lot of the external tools you would with the more mainstream languages is what’s hard imo.