Some babies and toddlers need this extra reassurance and some dont.
Ds1 needed it.
Ds2 needed it.
Ds3 needed it.
Ds4 sucked his thumb and self soothed from an early age.
Dd is 25mths and varies some nights she needs me to stay with her, others not.
I dont see it as a hardship as they are only little once and they grow out if it.
My dp is regularly not here at bedtime as his shifts include nights, evenings and even.if he is on an am shift he often has to stay late. I evolved various techniques to.make it easier, i tended to.put older toddler down.first and keep.the baby with me in the evening, i would feed the baby whilst settling toddler if i.had to.or put yhem.in a swing or wore them.in a sling or for ds2 and ds3 i tandem.fed for a while so woukd lie in ds2's bed and feed both to sleep and then transfer ds3 to my.bed.
We have always co-slept and they have each gone happily into.their own.bed at 2-3yrs old. we have always still had a set bedtime routine and got them down by 7:30 -8pm etc so.had an evening once they were asleep. We eat dinner at 6pm.
Dp and i jusy never wanted to leave them to cry so didnt, we would stay or sit by the door or potter doing stuff or go in and oyf or i would feed or lay down etc it depended on the child and what their needs were.
At 13, 10, 8 and 4 the elder boys all sleep fine and are very independent etc. The elder three go to bed on their own yho ds3 will still have a story and ds4 will gave cuddles and story in.bed.
I dont think its pandering or letting them rule the household, some children need it, others dont and i would rather help mine learn to sleep gently without leaving them to cry etc.