Looks more like his funeral attire to me.
As to why a Limo driver from Cork cares about fixed fare taxis in Dublin. He doesn't but he cares about Uber subsidizing Limo fares in Cork and he offers a fixed fare taxi dispatch service in Cork which is also likely to lose business and drivers to Uber because Uber is subsidizing it's fares and paying drivers a lot more than it charges riders. He probably can't do that, at least not for as long as Uber might or can if it wants to. Of course, Uber won't subsidise fares forever. Like Free Now it will want a profit at some stage. That's when drivers will have to either cover the discounts themselves or lose the work. Of course, drivers outside of the traditional taximeter areas will be well accustomed to fixed fares and will know which ones are and aren't worth doing but, for the most part, they won't be used to paying 15% (inc VAT) commission which will obviously increase the amount the fares will need to be to remain viable which isn't good for customers.
An Oireachtas Committee seems like a reasonable course of action from Govt perspective. There will be liberal left politicians on the committee who may side with drivers to some extent and, at least, there will be meaningful debate at Govt level.
In conclusion, I would encourage all drivers to listen to Derek and delete Uber. If Uber survives any legislative change on foot of the work of the committee you can always go back in a few months/years.
