He says Paypal is in C++. That used to be true 10 years ago, but is no longer true. Paypal's back end is written in Java.
Basically this is a table with cherry picked software projects where anything that isn't in ASM, C, C++, or Java is lumped into "Other". I don't know why anyone would create this useless page. It's in a style that honestly suggests "pre-internet" where all your knowledge came from curated sources. Nobody needs to curate this list.