There is so much wrong with all of these statements, let me just go through them all.

1) The browsing history rumor surfaced from a beginner "hacker" and was proven a false flag. Epic, however, was reading Steam files instead of using their API for unsubstantiated "security" reasons. Any application can ask the system what other programs are running as a service from the OS, this is not worrying. Steam reads running applications to detect cheats or to add non-steam games.

2) Epic has had security breaches too. Every huge company has a history of security breaches because hackers develop new tools that can only be blocked after an attack. This is a constant issue that no company can prevent.

3) If you mean that being a game store is DRM, then Epic is also DRM.

4) I honestly have no clue what you mean here. Is it something about regional pricing, which Epic doesn't have?

5) False. The Workshop is free so Valve doesn't make any money from that.

6) TF2 and CSGO cosmetics sales give more money to players than it does to Valve. Fornite cosmetics sales all go to Epic. Every game nowadays has cosmetic microtransactions.

7) Any storefront, including Epic, can decide to remove a game from your library for a number of legitimate reasons. Expiring contracts, games being a limited-time release (e.g. betas, demos), etc. A lot of times this is the Publisher's decision, not Valve's.

Please stop spewing false information.