Armor stands not ignored no matter what
Armor stands that have been specifically set as markers, by any means - be it MythicMobs, vanilla Minecraft commands or Denizen are not ignored by the targetter system of MythicMobs when "ignore=marker" is entered as an attribute to a targetter, nor are they ignored by default as stated in the config. This has been an issue for about a year now, but it is only recently that I have felt the full brunt of it since I'm just getting into coding armor stand cosmetics.
Projectiles cannot fire when the player has a marker armor stand mounted on them and when swinging a sword, they can only hit the marker armor stand and nothing else with mythic skills. Normal vanilla swinging attacks and other vanilla mechanics go through the marker armor stands perfectly fine which indicates it is indeed a marker.
If a packet-spoofed armor stand (fake entity) is used instead of a marker armor stand, all Mythic Mobs skills go through it just fine, but choosing this method results in loss of flexibility and overall control over the armor stand, along with a myriad of other technical issues(such as the fake armor stand glitching out and not rotating properly, this issue is not present if it's simply a real marker armor stand.)
Attempting to ignore markers through: @EIR{r=40;ignore=marker} does not result in the targeting system ignoring markers, but does not throw any errors in the console either. Furthermore, when projectiles created through a mythic skill hit a marker, they run their onhit scripts.
My config.yml is identical to the one provided on the wiki ( https://git.mythiccraft.io/mythiccraft/MythicMobs/-/wikis/Configuration )
Running Mythic Mobs 5.1.1 Premium Paper 1.18.2
update
In essence, the underlying issue is that Mythic Mobs, by default does not ignore armor stands of any kind, even though it should according to the config.