in the case of something like lugia vstar, sometimes you WANT to discard cards from your hand i could still see this card seeing play in some anti-meta deck at some point in the future, because the secondary effect can be really good depending on the meta #20 Powering up Dark isn't that hard with Galarian Moltres V (with energy switch) and Dark Patch
As such, you have to consider the role of each sylvan in the deck
For the set of three, youre looking at over $200, and thats a huge investment
The likes of Mew, Snorlax, Zapdos, and later, Alakazam, all take the spotlight across the pack and box art and the promo cards
The archetype is capable of controlling the game with endboard pieces like "Plasma" (shuts down monster effects), "Dark Angel" (shuts down the controller's Spells), "Dystopia" and "Destroyer Phoenix Enforcer" (Quick Effect removal disruptions) and "D-Tactics" (banishes 1 card from hand/field/GY)