Like everything, if you buy a kit you take your chances, some are good, other bad.....
If you have made that decision to buy, then in all likelyhood you are looking for a quick, 'easy' option, maybe because you aren't able (and that's not a criticism - not everyone is!) to scratch build. Kits are a guideline, a starting point, mostly having undergone a long development and refining process.
I would suggest that if you want something in the water in 5 minutes, pop to beatties or whatever they call themself now and hand over your £30, or else dig deep and spend £3/400 on a ready built product as seen here or the likes of ebay.
There is supposed to be some pleasure gained from building and sailing.... if you're not getting that and only getting a kick from complaining, I would suggest you move on and find something else that appeals more strongly to you.
There are relatively few suppliers of kits, we can do without loosing any, for most people they supply exactly what is needed to meet the step from RTR onto scratch building.