Being “anti-drugs” can be a positive position of support for drug users and tackling the root of the problem.
Not just “do drugs = bad guy”. But actually understanding the problem, and addressing it

IDK. It puts them at the forefront of this fight.

If governments successfully prosecute distro maintainers (if they can) for this, then distro maintainers are liable.
And distro maintainers would then have to pursue non-compliant users to cover that liability, or fold.
Which is a huge loss for open source.

Or, there would be a huge legal fight and it turns out that the licence of a distro protects it from its users actions.
Which would be awesome and a massive win. It also makes sense. Nobody is suing an OS maintainer because it was used for a data breach.
And then the governments have to pursue the actual users. Which… is gonna be useless wrt these laws

Discord is going to be the age-verification-service for gaming, if they can get laws to follow fast enough.
They have the gaming community, they have chats/friends/DMs/VoIP.
If they release a dev toolkit that implements in-game chat, in-game VoIP, friends list and age verification… All while not being tied to steam? Imagine if they offered a system for in-game purchases and gifting purchases to friends (oh yeh https://gam3s.gg/news/discord-adds-in-app-purchases-for-in-game-items/ )
They are positioning themselves to offer a huge range of features, easy navigation of legal minefields, and no distribution-platform tie-in - while also offering out-of-game functionality of all of that (likely leading to player retention for games that leverage it properly).

They are positioning themselves to be a market-leader/industry-standard for game social networks. Everyone that has ever used discord is the product they are selling, and they are now releasing the features and tools for companies to leverage that.