100V ~ 3.55A 50/60MHz input Playstation 5 for 220v plugs

The approach Sony took is uncommon, but it's compatible. Now, there WAS a time you had to know (Ex, PS1/PS2) due to the use of linear power supplies, but the PS4 and PS5 are using the same global power supply across all models due to cost. It's more cost-effective for Sony to use the same part but "localize" it by changing the label; for example, if you were in Japan, it would say 100-120V (Japan has a weird power grid with some areas being 100V, others being 120V). As such, it's commonplace for the Japanese version to mention this, but it's not mentioned in a country like the US, where we use 120V. That said, all of the PS5s use the same 100-240V SMPS.
It's the same as if I buy a Sony camera from the UK/EEA or from another country where I can toggle it to English (and it's not the KR camera, which is almost as bad as the J1 but at least offers English), mostly; if I get the original power supply, I DO need to replace the power cord with a US cord since Sony has 2 adapters: US/CAN and ROW for easy regional changes (power cord in box), but I can use it being it's a 100-240V global SMPS supply. The reason they do this for ROW cameras is cost, but fix the plug on the US adapter for cost for similar reasons. How it effectively works is if I buy a UK/EEA camera and import it to the US, it will come with 2 UK plugs, as some areas use one or the other, with an IEC connector compared to the US/CAN fixed prong variant. One cord is likely a waste, but it's cheaper for Sony to include both to avoid the additional cost of sending the correct plug for areas that don't use the traditional UK plug. In this case, it's just a nuisance issue I can solve with my boxes of wires.

Most manufacturers label it 120-240V in the US (note: Others label it 100-240V here, but it can usually do 100V in Japan if it has to; Japan's power grid is just weird, with some areas being 100V or 120V).

What Canon did on that charger (as an example) is true "global" labeling. This type of label is far more common than what Sony did, but caution is REQUIRED around buying the camera, for example, given that Sony is willing to lock everything out but Japanese on JDM variants of the body ("J1") to discourage importing not meant to be exported.
(Note: Sony "Overseas" models from the Japan Sony Stores are fully unlocked with all 36 languages) for export outside of the one they sell directly to the customer in Japan when it was new.

None of this behavior shocks me as Sony has always been a bit petty with the grey market and makes the things to watch for known, not a liability. They do the usual industry BS like refusing to repair modchipped consoled (despite making it a REQUIREMENT to own a Japanese PS1/2 without hacky nonsense, for example, due to the region lock) but have come to realize you don't make friends by being a pain in the rear end; just annoy people. Sony is still hostile to the grey market, but far less; Nikon took Sony's trophy there tenfold in a lot of ways for the cameras. Consoles have largely been region-free for 10+ years (except the PS2 compatibility layer on the PS3). It's critical with newer Sony bodies you know too since 2018+ can no longer be tweaked by anyone but Sony. Lenses are a complete non-issue as the lens you buy in Japan will work on a US camera body and be marked the same.