I disagree.
It was brought to my attention last year sometime to help with my PTSD and searched out a qualified and trained therapist and have found it to be very scientifically-based and effective in learning to completely eradicate PTSD. Yeah, I was highly skeptical when I had heard such rave reviews, but all that did was prompt me into doing much more through research for myself.
I really recommend it.
ETA: It really shouldn't take more than a dozen or so sessions, either, so it's incredibly short and effective. Gotta make sure the therapist is certified in EMDR though so be careful of that. The tapping and so forth is mainly to break the racing thoughts and negative feedback loop that anxiety can tend to produce. One example: last year, the second-to-last panic attack started and I tried to do deep, slow breathing, yadda yadda... didn't work; half hour later my heart rate was still about the 180 range and so I called the ambulance and didn't start to calm down until I was in the back, on the way to the ED. I learned a few techniques since then but didn't have any panic attacks until like last month. I was going to bed and turned out the lights, my mind went into overdrive, I started to panic, heart rate through the roof, BP skyrocketed... the usual. Got out of bed, went to the sink, got a slightly cool washcloth with water, placed it on my face for about a minute... little less. This triggers a "diving response" in the body which completely reversed the panic attack in less than five minutes. I was back into bed and fell asleep normally. First time ever that's happened to me. The only other time where a panic attack was so short was once when I had a Valium in response. Nothing else was able to literally stop the attack cold like this one little trick did.
That's just one example of when an attack came. The other techniques I would do during the day or throughout the week to help deal with stressors as they arose instead of stuffing them or avoiding them or allowing the stressors to build and overwhelm my natural mental and emotional protections, for lack of a better term.
I am extremely against woo woo stuff especially when it comes to psychology and related issues because I know how easy it can be to fall into the traps. The human brain is ooooonnneee complicated mo-fo as we all know! I would never have done it had the science not been solid enough for me to trust in the process; and I've done a lot of woo crap when it came to therapies in the past.
Anyway, for whatever it's worth...