What have the planners got to do with sanctioning funds to actually build the transport links? That's the actual problem!
You answered your own question there. Incidentally, which routes only have 7/8 passengers, and is ridership that low on a consistent basis? Have you stats to back this up? I've hopped on the 16 on occasions where there's no one else on it, yet a lot of times I get on and it's standing room only. Are you saying routes such as that should be operated by minibuses!?
The new Luas trams are experiencing some teething problems, which is not uncommon (even some new cars get recalled!). It'll be fixed. It has absolutely nothing to do with the overall suitability of the system!
Inconsistency in your argument, ignoring questions, cherry-picking points you agree with and ignoring points that don't suit you... that's what makes it look like you're trolling.