Think of the phrase: about music. “90’s music” would imply music from specifically 90 (probably 1990 where we assume the writer was lazy about the initial apostrophe)—possessive form. “’90s music” uses ’90s as an adjective for the entire decade—and with the preceeding apostrophe makes it clearer 19 is omitted. 1 year versus 10 years as a big difference. Using an apostrophe in the right place clearly removes the ambiguity.

It was an error. It happens, and too many people do it so next time maybe you won’t with a good habit being formed.

for Mobile OS’s

for mobile OSs*

One man’s pedentry is another man’s pet peeve. This is a syntactic error that isn’t just a typo but a misunderstanding of the mechanics of apostrophes.

Hercules’* promise or Hercules’s* promise

The choice is yours.

since I do copy OTP’s

OTPs*

Really. Apostrophes are used for possession & contractions (not making words plural). In this case, you are omitting the 19 from the decade starting at 1990. What is plural is the years inside that decade, meaning the 10s place. All to say, it is 100% ’90s*.

in the late ’90s*

sells NFTs*

Nvidia GPUs*

The ’90s*

’90s*

1000s*

RPGs*

FOSS projects are often worth their salt

They were invented long ago—long before keyboards, but the terminally-online folks here forgot that pen & paper also happened before & folks writing English used all sorts of symbols, such as þͤ for “the”. But I guess if it doesn’t fit on ANSI keyboards invented for typewriters 100 years ago with 100-year-ago limitation, these symbols cannot possible exist in contemporary times lol.

Nazis*/white supremacists*

Also don’t waste your time with them

Edit your XKB config 😎

Write*

But it’s okay; I protect

What is a “standard” keyboard? No such thing as every region has different keyboards & variants inside those regions. I can use AltGr on my desktop keyboard & holding the hyphen key on mobile allows easy selection of em dash & en dash.

They have different meanings where the lengths help at a glance such as using en dash for a compound adjective or em dash for a longer pause for a clause. This aides in reading even if you only pick up on it subconsciously.