Well lets see now.....I didn't say I thought it ok for Lydia to do the same job as a summon in the same context.....FWIW, I don't use followers now.....but even when I did use her, I never just let her handle all my dirty work while I hid cowardly around the corner....she was always support....we were a team.
My comments would apply equally to those who invade a tomb mob handed with three followers including a dog.
Remember.....I said...imo a summon for 'combat support'.....but not 'fire and forget'. Keeping it in context is important because I am NOT against ALL summon use...as I have carefully explained.
The sneaking up and poisoning comment.......trickier, but the point is it that it is still you engaging the foe AND taking the risk of discovery. On top of that sneak attackers of any type have to spend a relatively long time in the danger zone......fire and forget summoners run just near enough ping off a summon and high tail it back to safety......never actually engaging a foe.
Flame cloak and chain lightning eh.....well I nave not tried that under close combat curcumstances.....as you find in tomb passageways for example. However, I do know the time taken to cast a spell is long enough for a Deathlord to get two hits into you while you are temporarily defenceless.....so facing two DL means four hits on you which means Dead! Also of course.....don't forget I mentioned the very frequently encountered DL archer with ebony weapons. These guys are often one hit killers.....Those spells had better work first time cos you won't get a second chance.
Why not try try all this out under proper combat conditions......lets say taking the mage into Forelhost at say level 50 on Legendary
cos thats what I'm talking. Post us a video and I'll be munching my hat
If Skyrim were real and I was in it......yes I WOULD do exactly that....summon ALL the time and keep myself out of danger like a great big wussy.....do ya think I'm a heroic warrior type IRL (over age and overweight.....remember Newheim The Portly from Anvil?). I would throw summons through doorways like you'd use a grenade and runnnn (walk briskly!). Adella, and her earlier self Ulda, are kinda my alter egos......everything practically dead opposite to me. Courageous and magnificent, they bask in the glory of valour (sigh). Me, I'd be bricking it