There are many powerful creatures in the world of Pokémon, some focused on their defensive capabilities while others do their best work while being as annoying as possible. That being said, very few Pokémon are able to get by without some sort of attack on their moveset, which is where the attack and special attack stats generally come into play.
Galar may not have the most powerful Pokémon in its region, there are more than a few which can compete with the best of them, either due to their stellar base stats or a combination of decent stats, abilities, and their movepool and are worth investing time in catching for many teams.