Beginner Mark,
I think you can see that you're getting mixed responses. The reason for that is that a traditional Cabernet is always made dry. But everyone acknowledges that you can make your wine however you want, even sweet.
There are some varietals that better lend themselves to a sweet red:
Lambrusco
Island mist reds
Orchard breezin' reds
Summer Breeze reds
So, the choice at hand is whether to go "against the grain" so to speak, and make your traditional cab into what you like to drink. Or to make your cab in the traditional dry way, and then make something else that is really designed to be sweet.
In terms of traditional dry cabs, you also should age them to get to a year or more, to get to their true potential. Whereas, the sweet Mist/Breeze kits are really designed to be consumed at four weeks. They have some nice flavors like cherry or berry cabs.
Essentially it's up to you, but the folks in the forum are pointing out that that would be a choice to go a different direction than, say, a commercial cab which is dry. If you've had a commercial cab in the past it was surely dry. Cabernet is an epically great wine made in the traditional way, with lots of tannins, and aged to a year+; so it's really tough for anyone to tell you to shortchange what could be fantastic.
The amount of time it takes to make and age the wine is something I didn't understand when I started. So I ended up making a mist-style cranberry malbec first as an early drinker, as well as a few whites, then making other "big" dry red kits to age for a year. It means you'll have to have a few batches going at once in order to have stuff to drink now and later.
Good luck, whichever you decide!
Heather