I find this statement rather snarky and it is imho quite close to being against the HN Guidelines. Anyway I also think it is wrong. Sure not all videos from LTT are high-quality well researched and contain thorough testing but when they are really reviewing a product they put a lot of effort into it. They are even in the process of building a decked out lab to facilitate proper testing.
An example of this is their review of the recently released Ryzen 7000 non-X CPUs. They tested 11 different CPUs in 9 different games and 14 productivity benchmarks and further testing with regards to thermals and power consumption. The whole 18 minute video is basically Linus explaining result charts for these various tests. https://youtube.com/watch?v=CTiRNnSg0jA&t=9s&pp=2AEJkAIB
I encourage you to watch this or any of the other hardware review videos and think about reevaluating your opinion. I don’t want to come across as a fanboy but it think your under a quite outdated impression and I think it’s unfair with regards the investment and change LTT is undergoing as of late.