I think it's only the "hype train" going on here, people are overeating and I can't see any of them being really tournament-worthy except maybe Umbreon as a support. Even Vaporeon as an attacker isn't really better than Urshifu in any situation and dealing 200 isn't gonna one shot anything + it can't hit cheryl + if you miss the goon ping you can't even 2HKO Vmaxes as 100 + 200 isn't a good math to have.
On the other end Espeon will be good against both Urshifus and Shadow Calyrex, so a good point for it. And the ability could be usefull in the future.
200 damage+more, is super relevant in this format for many reasons.
1.)Goon+nets means you get more uses out of your goons. And like we see with dragapult, Rapid strike Urshifu, eternatus+Many other decks, that is a very viable strategy. It's more relevant now since it pushes your numbers higher
2.) 200+ 2 goon pings is 220 damage. That's Zacian V + Evolving Vs HP range. If you have a bad turn 1 with just a Rapid Strike Vaporeon V in play, you are still an immediate threat to any evolving V pokemon.
3.) 200 for a single energy attachment. Outside of energy acceleration, I don't believe any pokemon can boast that at the moment.
4.) You can easily Cheryl this card and attach again. Making this a tank.
5.) If you miss a goon ping and do 100 damage turn 2. You are still a huge threat to an evolving V. Next turn they are 2 goon pings away from 220 more damage. That's scary math to have for a pokemon that can do this for a single energy attachment.
6.) Name a VMAX post rotation outside of Single Strike cards that is OHKO other VMAXs. That list is very small. Most VMAXs are playing the 2shot game unless they have a very substantial amount of energy(Lapras VMAX/Shadow Rider Calyrex)
7.) Didnt even get to the part where it's a rapid strike pokemon, meaning it can be teched/paired with out rapid strike attackers AND gets all the rapid strike support. Now that I think about it...It's the strongest Rapid Strike pokemon we have outside of Blaziken V
8.) TTGXs will rotate. The numbers we want to hit are 220 and 320.
9.) Zizagoon isn't the only way to get damage counters on the field. Completely forgot we have that new inteleon VMAX coming out that gets your damage on the board and a pretty good finisher