Therapeutic relationship scares me.

[Freddyt]

That’s inappropriate boundaries.

Those should be set at the beginning - both the T's and yours. Sometimes it takes time to build trust enough to bring stuff to therapy, but that means they should deal with what they have and build that trust.

Like really, reeeeeeally bad, if they can’t even teach their clients, but rely solely on a single technique

Which amounts to the same thing. They should teach you what the accepted boundaries are first. That's part of the job, that's part of what they should be doing.

Creating attachment to your T in a romantic way should never happen. Our relationship should always be professional. Practitioner and client. At times it requires a certain amount of closeness to do what we need to do, but professionalism means - doing that for a reason, because it's needed for therapy to work.