Squats also activate your abs and glutes. I've never seen one elite Olympic lifter do these things and they seem to be able to snatch, clean & jerk and squat fine without them.
Why did you ask the question if you already have your answer? You asked for MY opinion. I activate by preparing for the movement to do, sometimes with a few technical drills. If you don't like my answer, fine. But you asked what I do and here it is. Some of my athletes do mobility work and activation drills but they do it on their own. And to be honest I see no difference in performance or rate of injury between those who spend 30 minutes "activating" and those who just gradually work up on their main movements.
And if you are an athlete you will rarely have the chance to do all of these cute activation drills before competing. And if you play in a sport where there are several events or the competition has several periods you can't "activate" 4 times per day!
And if you are a "real life athlete" like a fireman or someone who works a physical job... will you "activate" before rushing to the fire or do your job? Being able to perform at a high level with minimal preparation is also a quality worth developing.