I don't think they are; they've been doing adopts for a while now, and the style is consistent with their linked Deviantart acct (( I've also been watching 'em for ages over on DA; since before I even had a TH ))
link to a masterlist of the stolen designs: https://toyhou.se/~forums/5867.service-reviews/506952.psa-tomaise-design-thief
I'm keeping it short as to not overclutter with information, i've never written a psa so, bear with me
Perm Link https://toyhou.se/~tickets/create/user/560515 (This account is now closed.)
Facebook group Adoptable Market [TH] Warning https://www.facebook.com/groups/AdoptableTH/permalink/7369085619823082/
Many designs that Tomaise has posted are stolen, they were sold on mainly on Facebook, and they reuploaded and resold them on their account.
I got sold a design that is since deleted, and the person owning them talked to me about it [https://toyhou.se/26087039.sapphire]
Another example. https://toyhou.se/25850564.ziggy 1 month, 11 days ago
https://toyhou.se/25562666.- 1 month, 27 days ago with the proper credit of [https://www.facebook.com/so.stupidd/photos] Which appears consistant.
https://toyhou.se/25672541.cassette
https://toyhou.se/26429432.yuma
https://toyhou.se/25644719.ivy
https://toyhou.se/25672553.makoto
are also drawn by the user above. the user gave me permission to keep those characters up as proof as to that they were stolen!
https://www.facebook.com/profile.php?id=100024126124070&sk=photos
Another artist who's art was stolen by Tomaise.
https://toyhou.se/25820641.eden (do not pm this person!), originally by https://www.facebook.com/photo/?fbid=873670681063605&set=gm.6879607058770943&idorvanity=1292186187513086
owner is https://www.facebook.com/groups/1292186187513086/user/100070142364130/
I will update this as much as i can as I find out more across the FB group and toyhouse !
please feel free to comment any findings that you have as well. this psa has been shared with the facebook group
putting it here because its not as important, i lost $57 from them and ive been trying to save money either way, anything is appreciated. https://ko-fi.com/alphinaud