> Then you are free to name off 10+ loli ecchi anime in the past 2 decades
It's more about if series had lolis in the past, and the series lewded the girls, the lolis weren't the exception, or that if the source material was lolicon, the anime kept the fanservice. Neither is the case anymore. Even shows like Sailor Moon, Princess Tutu, or outright children's cartoons like Jewelpet had their share of panties/detailed fanservice (at least for beach episodes), and small girls were depicted as the desirable ones in many titles too. Nothing like that happens either.
Pretty easy to get 10 titles that had outright big focus on loli ecchi (Uta-Kata, Strike Witches 1/2, KnJ, Saki, Moetan, Popotan, Needless, Nanoha/A's, Kanamemo, Rizelmine, Crime Edge, Papa no Iukoto just from the top of my head) but what is more important than other anime having a lot of casual loli fanservice, loli main characters or both, even casual ones like the once-entry-level Elfen Lied, or Higurashi, the Kugyuu shows Shana, Hayate no Gotoku, Zero no Tsukaima, MM!, Lotte no Omocha etc both had main lolis/small girls as focus, depicted as desirable and had loads of fanservice, and the list goes on really to at least a few dozens of titles.
This past half decade or so is getting so dry on all of these aspects that basically Dororo is the loli we're getting the most skin in seasons, and it's not even supposed to be fanservice, while titles with lolicon source show us just how apologetic anime industry is about lolis, when we don't get a single pantyshot, or even slight buttcheek (UzaMaid).
Really the best we can hope nowadays is some under the radar series showing some slight glimpses and bits to us, but no loli will be portrayed as desirable.
Moreover both UzaMaid and WataTen (the ones with lolis in main/almost main position) are titles that make sure to tell us just how creepy and bad it is to like lolis.