What i'm about to say is going to get alot of hate so let's get this over with.
While i understand your anger and frustration , you need to know that pokemon pvp is not a game where you can exactly predict what's going to be really op in the meta 100% ( with exceptions of course ) . I myself wrote a post months ago about banning mega sableye , but i was never in favor of instantly banning it. Everything deserves a chance , and it's your job to keep up with the pvp meta and try and predict what is going to be and not going to be banned , and act accordingly . That is what winrate and usage stats are for at the end of each month ( i know i'm contradicting myself a bit here because it hasnt been a month since wave 3 , but if you kept up a bit with what was going on on the pvp cuncil, you would have known that alot of well known big pvp names and council members have been demanding a mawile ban and a sableye ban was inevitable if mawile gets banned since they come in a pack) , not to mention that people have been crying FOREVER in the pvp council fora greninja ban. Pro staff are not obligated to tell you what will be banned, do your own research for that.
You re complaining about spending hours hunting only for pro to ban that said mon , but look at another game like Yu-gi-oh.
People are spending actual money to buy the cards , (unlike pro which uses virtual money) , and are buying and selling them all the time for insane prices . Here are some examples: (as of current date)
-Ten Thousand Dragon, worth around $188
-Trishula, Dragon of the Ice Barrier, worth around $171
- Sengenjin, worth around $107
And yet , Konami bans /limits Yu-gi-oh cards OUT OF NOWHERE ALL THE TIME. People are losing ACTUAL MONEY because of this . So, what's the solution to this you ask? They just keep up with the meta and the usage stats , and predict what is going to be banned or limited and sell them beforehand. It's not Konami's job to refund the players who lost their money , it's their job to balance the game. And this is the exact same case with pro right now.
Although the banning process was handled very poorly from walross and the rest of the staff , these bans were kind of predictable if you have taken 10 minutes of your time to look at #council-chat in the pro pvp council discord. Heck if you asked any decent player , they would have told you that mawile and greninja are absolutely broken in the current meta state. Sorry to say this but money frog has overstayed it's welcome , i agree with these quickbans ( aside from metagross , but if that's the sacrifice i have to make to get rid of the others, i'll take it any day of the week)