Whataboutism's For Kids!
There seem to be a lot of insurmountable differences between certain factions and, of course, not all differences can be worked out. That’s depressing sometimes. However, a lot fewer differences can be worked out by encouraging as many as will accept and understand the idea that absolutism and Whataboutism aren’t the only ways to understand morality.
How do you want to be defined? By one action? By some opinion that could evolve? By a mistake, regrettable only with hindsight? Or by the sum of your parts? Okay, do that for other people. Start the trend.