Oh yeah, the 365 version is terrible. And post of the time, it could have been a Python Gradio interface or similar simple implementation without having to fight so much to make basic things work. Most of what I want Excel to do it just isn't efficient enough for; particularly with lets and lambdas, it's gotten quite powerful as a programming paradigm where you can visualize and manipulate your data spatially in a kind of Logo / NetLogo style way which is really interesting, but the second you reference a few thousand cells a few times even a solid CPU starts screaming.

I use Excel for a decent number of tasks and can do some magic with it, but only ever really for work where it's easier to share a weird Excel sheet than it is to pass around a Python script (which given I teach Python, isn't actually as often as most people experience).