It's been the same sequential numbering for 25 years now. And it's the same logo now for almost 15 years. I don't like either names, but I give props to Microsoft for at least trying a new name. Naming it the PS5 is boring, sterile and unoriginal.
The only people who might be confused are parents buying the console for their kids. Who will probably just buy it anyway. And if they are confused they can easily look it up - this isn't pre internet age when parents didn't know that the Super Nintendo was a whole new console.
The Wii U struggled due to people thinking it was just a Wii addon rather than a new console, that wasn't very long ago. People are more tech savvy these days for sure, but a lot aren't and how things are branded can help direct people on what to buy. I mean it's not like the Xbox One wasn't a bad name to begin with already. Xbox 360 was a weird name, but at least it's a unique number to make it standout.
Playstation 5 is stability and simple. Yeah it's kinda boring, and I like that Nintendo regularly changed their names over the years to make their systems more unique (Though the Wii is still absolutely terrible as a name, man they should've kept the codename "Revolution"), but people understand what they are getting with the PS5. Playstation 4 is old, Playstation 5 is new. No issues. Plus PS5 makes up for sounding boring, by being one of the most unique looking consoles in many years lol