Devris is 3/10 slower than tzunoda per lap, there is no point in waiting more for him.
I suppose they learned nothing form the case of Albon.
Marko is just very impatient and harsh on drivers. Albon was a really talented driver but he didn't want to wait for a longer time period to give him a chance. Now Albon is doing incredible things with Williams. I even read some news related to this topic today. It says that Albon was offered to return to Red Bull but he rejected it as he was believing in Williams' development and future. I think he made the right decision if this really happened. Because I believe he was going to end up with the same result again most probably.
De Vries didn't have enough time to get used to F1 either. We are barely halfway the season. For example Piastri also started to shine newly. McLaren didn't sack him because of being much slower than Norris in most of the races so far. I recommend the same thing to Marko.
I agree with Albon,the fact that both Williams were near the points zone with Albon being there in a so tight run season means that Williams finally is coming out from their lethargic slumber as they are not winning races since the golden age of Ralf Schumacher and Huan Pablo Montoya if I am not mistaken and these guys were racing 2002-2005,more than 20 years from now considering 2002.
McLaren is very much well known for this,they give the driver the right amount of time and the right amount of races before determining that he needs to be sacked,of course Piastri had not that many races and he is a rookie too but the McLaren team is run in this context by better people than Marko.