Here you go:

Please post a source that gives a different answer to this expression, I'll wait.
There's of course programmers that implement their own projects, but for big monetized products that's no longer the case. I'm in the software industry myself and have worked extensively in product development.
Sure bro you have multiple downvotes in many posts, I'm sure it's the person you're arguing with logging in with multiple accounts lol.

You realize a calculator doesn't need to be a dedicated hardware, right? Windows calculator, MacOS calculator, Android calculator, and all web-based calculators count as well.
You have no clue what you're talking about. Wolfram Alpha is a commercial product (with a free-tier as is usual nowadays) and uses the same engine as Mathematica, which is used extensively in industry, academic institutions, and government agencies.
None of your sources has exponents in them, and that's very convenient for your mistake of mixing up juxtaposition and your invented rule.
Btw, ask yourself this as well: why would your invented interpretation of distributive law be necessary at all? It brings no benefit to the table at all. Juxtaposition arguably does, because it allows shorter notation, but your invention doesn't.
Please find a calculator that gives a result different to 128 for the expression
2(3+5)². You won't be able to, because it's the only correct answer. If you don't post a reproducible example of a solver anywhere coming to a different solution, I'll consider your argument defeated and ignore further engagement from your part. Have a nice day!