Question about "When it comes to all things"

Question

I recently came across the expression "When it comes to all things" and I'm a little confused as to its correct meaning. I did some research and found several examples of using this expression. Here are some of them:

Omaha’s Christine McGuigan Photography NAILS IT when it comes to all things wedding photography.

We have to take the long view when it comes to all things working together for our good.

When it Comes to All Things 'Pneumatic', You Certainly Came to the Right Place

I'm particularly confused as to why the words "all things" are used in this expression.

If I omitted these words and used only "when it comes to" as shown below would the sentences have the same meaning?

Omaha’s Christine McGuigan Photography NAILS IT when it comes to wedding photography.

We have to take the long view when it comes to working together for our good.

When it Comes to 'Pneumatic', You Certainly Came to the Right Place

Answer 1

This is not really a "known" expression, so let's break it up.

There are two idioms here, the first "when it comes to X" and the second "all things X".

"When it comes to X"

When considering some particular person, thing, or action. Dictionary

"all things X"

This is the tricky part, where the whole phrase acts as a noun. Let's rephrase your sentence:

We have to take the long view when it comes to all things working together for our good.

We have to take the long view when it comes to all things that are working together for our good.

When it Comes to All Things 'Pneumatic', You Certainly Came to the Right Place

When it Comes to All Things that are 'Pneumatic', You Certainly Came to the Right Place

Omaha’s Christine McGuigan Photography NAILS IT when it comes to all things wedding photography.

Omaha’s Christine McGuigan Photography NAILS IT when it comes to all things that are wedding photography.

And yes there is a difference when you omit this. Leaving the phrase there gives context on "all things" and dissolves any ambuigity.

Related:

Idiom use of "all things X"