That is true, and if something like gaming (or reading, or playing sports, or building model airplanes or whatever other passion) actively interferes with your functional life, that's a huge problem. But there is nothing wrong with taking a day off work to play a new video-game that just came out, if that's your passion, even if it's "putting off work", or similarly in having someone else look after your kids for an evening to enjoy some gaming. Adults very rarely have alloted leisure time where they can just pick an activity. There is always something "more productive" you could be doing instead of pursuing a hobby, especially if you have kids. That doesn't mean that any time you pursue a hobby instead of one of these activities you are being irresponsible - there must be a balance. All work and no play, and all that.

Fully agreed when it starts interfering with your life you should reassess as with anything. But honestly I see gaming as a further place to connect with kids if you enjoy them. Something like Animal Crossing, Mario Kart/Party or Jackbox Party Pack can be some of the best bonding experiences out there. And it also lets you teach your kids how to have a healthy relationship with games/dopamine.

It depends on degrees. If you're going to lose your job and your wife is about to leave you stop doing it. If you just did 12 hours of work/chores/put the kids to bed and want to relax with a bit of gaming? Some people would still feel guilty but I haven't a clue why.