Morph cut is not something that works always. More often than not, I've not used it. When it works of course it's marvelous. So ... applying across a ton of cuts, I'm wondering how many of those cuts would actually work.
You can make it the default transition and then apply the default transition to all clips, but as Neil implied, you will likely not be pleased with all of the results and will need to adjust each morph cut individually to get it to look OK.
Sometimes a regular cut with an increase or decrease of scale (zoomed in or out) looks better.