My final thoughts…as with many of these threads, we’ve all gone off on many linked tangents.
The crux of the OP’s original statement was that SAHPs with babies and toddlers deserve more respect as they are not doing ‘nothing’. I think we can all agree that anybody, whether solely during their maternity leave or for longer as a SAHP, with children of comparable ages to the OP (5 months and 3), is not sat around doing nothing. They will be busy meeting conflicting demands from however many children they have (e.g. different feeding schedules, naps for baby vs entertaining more active toddlers, one or other being ill at different times, changing nappies and potty training, needing to be at different places at different times, dealing with increased washing etc but back on much less sleep again). It’s certainly comparable to a full-time job if neither attends any type of childcare without you.
My own best friend, who is a full-time senior police officer and mother of 3, told me that, like the OP, she had a new found respect for SAHPs whilst on her second maternity leave for 1 year with 2 under 2. She was just making an observation that she was tireder and busier than she’d anticipated, and relieved when her husband returned home so she could have a minute to herself.
As a SAHM myself, I found the role more demanding when mine were both under 3. Now, my son (aged 6) is at school, and my DD (3) at pre-school for 3 hours each morning. This for me is much easier. I can block cleaning/gardening/ironing/DIY/food shopping/volunteering/exercising for when my DD is out, for example. I am keen to re-integrate paid work once she starts school, as for me the role is becoming so different than when they were both under 3, and I of course have much more time back as they move into school.
The age of the OP’s children is very relevant to her original post.