duas possibilidades estranhas mas prefiro esta aqui

Newspeak?

lower case no punctuation

or extra characters within words to circumvent orange clown filters?

Good lord, I don't even do that with my text messages.

None: I always respect the typographic rules.

I'm old enough to still do them properly, but sometimes I don't put a full stop at the end so that I appear younger

When I was a child I had problems learning the accentuation of words, although I later pronounced correctly even though I didn't place any accents.

Nowadays I try to put the accents by force of memory and repetition, but in case I haven't time to revise the accents, undoubtedly, I'll write the whole text at once without accents, and according with the Netiquette rules in lowercase.

What happened to proper orthography, grammar and punctuation?

You don't respect your correspondent
or you don't respect your correspondent?

@Vivaldi, I try it in the correct way, using caps only to stand out an word or where it is needed, eg. in abbreviations.

yes