I'm going to politely point out that it's okay to write longer sentences and paragraphs.
Some writers are working toward a book, a collections of essays, or other work that is lengthier in nature.
Separating out your sentences can make your work look better on a phone, sure.
However, if disambiguate related ideas from a full paragraph your work look amateurish.
That is bad.
If your writing consistently reads like internal monologue by Marv from Sin City, just remember her was a bruiser with no intellect.
Writers are not all single-minded bruisers.
Well, some of you are.
The point I'm getting at is that writing is subjective and situational.
Let's keep it that way.
Much like a family, we get together to cheer and celebrate both our differences and our similarities. We also get together to drunkenly relive every minor slight that we have ever been dealt by our relatives.
As a matter of fact, that's exactly what we are.
A family.