Is there actually any incentive to suspect shed tail ? If we are all being realistic, that is what got Cyclizar to get banned and I personally think that is what makes Espathra really broken. Espathra has very low opportunity to come in any move of any Pokémon in the metagame. Be it a status move or a offensive move (even resisted), Espathra is very frail and quite easy to revenge kill if already hurt a little, and that is where shed tail from a slow orthworm comes in handy as it obviously protects it from status move, salt cure and revenge killing, or even a pokemon that would stand in front of one move and breaks the sub but can not take a second heavily boosted stored power.
Not to say that Espathra would necessarily be OK without shed tail (although that was what people were probably thinking after Cyclizar ban and before realizing orthworm is actually a good support that can easily come on several threats thanks to its immunity) but I have the feeling that being the best set up sweeper in the tier if protected, Espathra is a first revelator of may be a bigger problem with shed tail that will be more and more problematic as time goes on and more set up sweeper will be perfected with the creativity tera allows.
Not to say that Espathra would necessarily be OK without shed tail (although that was what people were probably thinking after Cyclizar ban and before realizing orthworm is actually a good support that can easily come on several threats thanks to its immunity) but I have the feeling that being the best set up sweeper in the tier if protected, Espathra is a first revelator of may be a bigger problem with shed tail that will be more and more problematic as time goes on and more set up sweeper will be perfected with the creativity tera allows.