1. Synchro is from 5Ds, a better series than ZEXAL
2. Synchro doesn't need something like removing 1 XYZ material to activate effects.
3. Normally, synchro materials go to graveyard and can immediately be used (or abused)
Well, boomers may remember the very early tcg when relinquished decks had some use. But, yes. Ritual mechanic become actually good after gx era with the introduction of Demise, king of Armageddon.
Not really, some xyz monsters can be better than synchro monsters
To summon them, you don't need tuner monster, you only have to get same level monster, and some xyz monsters have OP effect, that's why you can find them on TCG banlist
yes it's esthetically better, usage wise it's not, generic rank 4 will always be better to summon, They just don't create generic monster that would be too strong.