Although it might seem like it sometimes, that there are no strategists at work but it's all left up to the driver and engineer like Perez says can not possibly be true and is an obvious dig at the team since it comes in the same paragraph as expressing his disappointment at being sacked..
Well, it's hard to believe since it makes McLaren seem so amateurish, but it does seem to tally with the poor strategies in recent years.
Of course Checo is presenting it in a negative light but that doesn't mean it's untrue.
What I mean by that is that if his season had gone better (and he wasn't being dumped by the team) he might have said "It's really great at McLaren, you get to make your own strategy instead of being told what to do all the time."
Seriously though, it's good for a driver and his engineer to be involved in making the strategy, but if they really do it by themselves with just a lot of computer data in front of them, that is really stupid. Being able to drive a car fast, and being able to come up with a good setup, don't qualify anyone to be a strategist - that's an entirely different discipline.
I'm really starting to suspect that the team don't have anyone on the payroll who has an aptitude for suggesting or evaluationg race strategies. It seems as though they possibly just run a race simulation many times to suggest or validate strategies. We are talking about a program which they believe represents an accurate model of the real world, but as we've seen this season, it basically only works at all for a front-running car, and even in that case, not very often...