'Managing Meltdowns: Using the S.C.A.R.E.D. Calming Technique with Children and Adults with Autism'

Has anyone read this book? 'Managing Meltdowns: Using the S.C.A.R.E.D. Calming Technique with Children and Adults with Autism'

I saw it on Amazon and some of the language used there has me hesitant, but given when it was published it might just be a sign of the times. It'd be good to hear from some other autistic people as to whether this has been helpful for them and whether it uses too much of the sort of language I prefer not to (functioning labels, person-first language) or has a neuropositive stance. It looks like something which might be helpful for me but I don't want to get it unless it's recommended by other autistic people! 

Thanks in advance!