While the guy is brave for speaking out like this, the tweets come across as little salty no matter the industry, especially for a guy who should understand the nature of large scale production.
I totally get the sentiment, I have worked for very large companies and have felt on the talent retention side of things but the thing is the bigger the scale the messier it gets and you just cannot avoid it. You have a spectrum of personalities, skillsets, motivations even - among trainees and seniors but even among managers if the set up is so large it requires a team of those as well.
What I am saying is that it is super easy to accuse someone to mismanage but there are a lot of nuances to take into consideration especially in creative fields. I do not have experience in video game production and I am not going to speak for any of that but the larger the company the less productive each worker is and it is imo a systematic problem. Just to be very clear, I am not being apologetic for crunch culture in any way.
This is another insight how video games industry sit uncomfortably in the workforce paradigm - the nature of the product can be likened to a huge film production (which is usually highly mobile) but it needs a solid set up in a fixed place in a way, say, fashion manufacturing requires (there's specific machinery needed; a lot of creative decisions do happen in board rooms, etc.). Either way I think game industry needs to unionise in America or video game companies need to account for the in-between production periods and work like a corporate entity at this scale.