This sort of tool can work well but, with limitations.
Those that remember the Elu flip over saws will bear witness to this. They were mitre saws, and you would lock down the cutting head, flip the base over to access a pretty decent table saw.
I bought one, and happily used it for many years but, the limited cut width, not being a slider, would get frustrating. So I also bought the Elu sliding compound mitre saw. The flip over then, was only used as a table saw.
Back then, all my work was mobile site work, and van space dwindled every time I added such tools. So eventually bought specific tools with a single specific use.
I loved the flip over saw though, it helped me earn good money.
So sometimes hybrid tools do work, especially with today’s design and tech.
This is why I’m attracted to the Mafell Erika, it’s an awesome portable table saw, that is capable of very precise compound mitres.
Very pricey though.
Other than that though, I believe every tool has it’s place. Some buy a plunge saw, and sell their mitre saw etc. I wouldn’t do this as there are times when only a certain specific tool, will do a certain job more easily and efficiently.