OP- I'm on Tonberry too. I cleared Ramuh EX in DF a few times now. Quite easily too- every time there was at LEAST half the team JP as well.

I'm having no problem at all finding random groups for second coil farming.

They are doing the exact same thing they did with first coil. They put it in DF, accessible with only a full party for ~2 weeks.
Then it gets opened up to queue solo/light party/wtf ever you want- plus they add echo and "duty finder friendly nerfs" (I imagine they will make earth shock cleansable as they did the paralysis from ADS- reason they do this is there is a slight chance you can get a team with no silences. Dat DF randomness.)

TL;DR- Don't blame the systems for your lack of ability to clear content/make the effort to get a group together.