Not at all, and I've never said WAR is perfect.
As I've said numerous times, I dislike how Vaz handles the staff, and the numbers show our pitchers (one by one) did way better with Leon than Vaz.
Many of the sample sizes are small and even tiny, but when pitcher after pitcher after pitcher after pitcher almost all do much better with our back-up catcher, I believe there is reason for it.
Even in 2020, with all small sample sizes, I looked at the 7 pitchers with the most PAs (70+ PAs) against with Vaz. Six of the 7 had better OPS against with Plawecki than with Vaz.
The SSS all added up show a clear and present trend.
It's not that I dislike Vaz, but I think his 2 years of team control and over-valued trade stock value make him the prime candidate for trade, despite us not having anyone to take his place.
My trade suggestion involving us getting Stallings, addresses that issue, but signing someone like Mathis or Molina would too, and neither will cost much money.