See it from Valve's perspective.

They've had pre-launch source codes leaked by hackers, gameplay ruined by hackers; they probably don't like hackers.

I wouldn't be surprised if they signed up purely out of spite to tarpit and frustrate hackers.

That is such a bizzare take.

Valve's stance on hackers won't change the fact they exist and are out there doing their thing. Valve's stance can now be the deciding factor between exploits being disclosed to them for a reward, or sold on black markets as cheats.

If you don't want people "breaking your hard work", don't release software. However, being on hackerone can help alleviate the negatives.

Sounds like a great idea, now instead of them getting issues fixed they get sold and not reported.

> they probably don't like hackers

Many of their breadwinners were made by 'hackers'.