なにせ DLsite は長らく HTTP アクセス可能だったサイトでもあり、その辺りの動きの鈍さは筋金入り (?)
参考:
2017-10
https://mastodon.cardina1.red/users/lo48576/statuses/98896343448814119
https://mastodon.cardina1.red/users/lo48576/statuses/98911816426967133
https://mastodon.cardina1.red/users/lo48576/statuses/98911817277053550
2018-04
https://mastodon.cardina1.red/users/lo48576/statuses/99885366071015719
2018-05
https://mastodon.cardina1.red/users/lo48576/statuses/100005147266295342
2018-07
https://mastodon.cardina1.red/users/lo48576/statuses/100445218351261574
https://mastodon.cardina1.red/users/lo48576/statuses/100445229164819588
https://mastodon.cardina1.red/@lo48576/100445241941761543
2018-11
https://mastodon.cardina1.red/users/lo48576/statuses/101113421459084508
https://mastodon.cardina1.red/users/lo48576/statuses/101113445438548962
2020-03 (対応後)
https://mastodon.cardina1.red/users/lo48576/statuses/103884232232440619