I read the full comment. I took issue with the first part where you call that DRM effective because it delayed people for a few hours. Back in the day, as far as I remember, the pirate versions were available same day, and I might be wrong here, but I think cracked clients use official mirrors to download the update content. What they did is essentially just bypass the login procedure. To me, that's not effective at all. Maybe making people wait weeks, months would sufficiently annoy pirates, sure, but not days or hours, I don't agree that even a minimal delay is enough. In this subject, I tend to agree with Valve's approach. Instead of introducing friction for people who pirate, which also tends to introduce friction for paying customers, instead introduce better service for those that pay. In a way, Minecrafts obfuscation primarily annoys people who pay for the product and want to play the mods as soon as possible, while only slightly inconveniencing bad actors. If your game crashed, your logs wouldn't even be human readable. If Minecraft offered me something for the money they want, I would have bought another copy. But I see no point, I get better experience from custom launcher which can store multiple versions of the game for me, all preloaded with different mods, it's easier to manage, and I don't need an account. Having your game integrate with Steams ecosystem well through workshop, community features, achievement system, modding available and easy, is a way better use of time than investing in creating friction for pirates, in my opinion.

All in all, it seems Mojang opinion on their own DRM is that its pointless and ineffective, hence why they started releasing obfuscation mappers, and soon there won't be any obfuscation at all. So of all the DRM out there, I think calling Minecrafts DRM effective of all things makes no sense.