There's a lot of projecting going on here.
How can you possibly know how another person feels about a situation? Assuming all mothers feel one particular way... I can categorically tell you all new mothers are individual in their own situation, thoughts and feelings. Women do leave men when pregnant and with newborns for a variety of reasons, not all of them meaning the man has committed dreadful acts. Men also leave women when pregnant and with newborns, not all of the men are arseholes, and some women will have committed dreadful acts (don't worry, I am well aware of the stats on male on female violence before anyone protests that point).
The point is, don't assume about a situation. Take it at face value and be alert for other information to help decide what kind of person this male is. The fact he is single with a new baby doesn't tell you much
For previous posters talking about how a man can have time to date with a new baby.... I wrote earlier about the first man I dated as a newly single mum. He had his daughter for full weekends from 6 weeks old. Not because he demanded it, but because the mum decided that was the arrangement that suited her best. He didn't work mon-fri. He worked 4 on 4 off 12 hour days. But he had her each and every weekend. On his work days that fell in the weekened, he lived with his mum who provided childcare. His ex was well aware of this. I remember one phone call he recieved from her after he asked could she have her when he was working a full weekend (which was every 4 weeks or so if memory serves me right). She got really pissed off about this, even though he was saying he could have her alternate week days to make up for it. She was on long term sick at this point with no plans for returning to work. Anyway, he accepted it and just carried on as it was.
When I met him, he actually had his daughter for 9 days straight at that time. She was just 6 months old. Mum was on a ski trip with her other child. Through our 8 month relationship he had her for 7-14 day stretches at least 3 times so mum could go on holiday with her older daughter. He planned all his annual leave around mums holidays. As for the time to date, as he worked 4 on 4 off and lived right by my house (met on Tinder, and he lived literally on my doorstep) it made it relatively easy despite my own work and child commitments.
Ultimately, assumptions don't benefit anybody. I certainly am not happy that people think I was weird/had no morals etc for going on dates when my baby was little. I started dating when he was 6 months, and still EBF. Is that weird to? Or is it okay because my husband left me pregnant with 2 other kids? Do I get the moral highground because he left me? I don't know 