I'd say 2/3 of the player base never bothers with materia for a whole bunch of reasons.
1. New content is already dead on arrival..
Pagalthan for example is only I 490 when most players are already 515+ so already overpower the content.
2. Gear is so short lived it's just not worth melding something you'll just throw away in a couple of weeks. Why bother?
3. The returns from melding materia make virtually no distinguishable difference to the average player.
You can meld like 800+ skill speed quite easily and your job doesn't feel any faster to play. So what's the point?
4. Materia doesn't carry across upgrades or augments. So you get your 520 tome gear. Meld it. Then augment it. Goodbye materia... which then links back to number 2. If it stayed when the gear was augmented at least then it would have a better life span.. you can remove it but that doesn't always succeed so end up losing materia.
5. The stats system overall is largely worthless outside of item level. You can be level 50 with 300 spell speed or level 80 with 2000 spell speed. Your flare cast time is still the same..
6. Those glamour items you want are usually expensive so just sell the materia you do get instead of use it...
Honestly so many people don't bother with it at all. And it's easy to see why. I queued the tower earlier and found 13/24 players in the alliance had no melds at all. And can see similar if you just run around eulmore examining people and you'll find half of them have no melds at all. More than half if you exclude crofters and gathers
Not neccessarily. for example many older mmos your crit rate wasa determination of your crit vs an enemies "resist" the actual trerm varies. but in XIV every boss essentialy has the exact same stats with the exception of HP. they all have the same defence the same resistances the same toughness, zero evasion.. and this is why even if you takea level 80 job against a level 50 boss your crit rate is still the exact same.. it's the result of oversimplification of the stats.
you could quite easily give bosses a resistance stat that counters the effect of crit. which would then lead to bosses that might actually feel different. bosses that are suciptible to crits so you can knock out like 40%,, bosses that are resistant to them so you only maybe land 5%.. it's not just crits though its damage in general. you can take a level 80 sam and use midare on a level 1 mob. you will hit for the same damage it does to a level 80. which then shows that a level 80 boss has the exact same defence as a level 1 lady bug.. the only difference is the level 80 boss hasa bazillion more hp..
its all part of why so many people feel the stats are so bland and boring.. because none of them actually matter or do anything