I disagree VEHEMENTLY. Sent is a godsend if you want to write a simple presentation without the bullshit. And if you use sent, the constraints placed on you force you towards making good slides.
Disagree all you like. The same is true of org-mode with reveal, or Marp, or any of myriad other tools. There's no magic to suckless software. It's just a lot more opinionated than most, a trait which plainly suits you well.
Who called it useless? But ascribing rampant NIH to suckless is hardly a strain on credulity; otherwise they'd just use FreeBSD, instead of reinventing it piecemeal on the Linux kernel.
You did describe it in a way that implied it was useless if NIH wasn't your thing.
And no, I don't argue that NIH doesn't exist in other suckless projects, merely that it isn't the rationale for sent. Sent has some solid advantages over anything else out there, at least for me.
[0] https://wiki.gnome.org/Apps/Pinpoint [1] https://www.youtube.com/watch?v=po5La1OP2WI