English syntax hard?

Yes. Sequence of tenses. It's harder than Latin. As in, what the hell does "future-in-the-past" mean?
Or tenses (+aspect+mood) in general, I guess. You guys have too many of them.

As for the orthography, you know what is to blame. The Great Vowel Shift.

English syntax hard?

Yes, it is. It has 9001 rules for the allowed order of the words, 350 for each, and you have lots of those small words with grammatical purpose that don't really convey anything, but must be there otherwise your sentence sounds broken. Refer to my examples with yes/no questions and *blue famous raincoat (instead of "famous blue raincoat").

That happens because any language is complex, there's no way around. You can dump that complexity in the word order, like English does, or dump it in different word forms, like Polish; but you won't be able to get rid of it.

There’s a lot of issues with English. Most of them are for using loanwords without phonetically changing how they’re spoken in the English alphabet.

That's something else, the spelling. It's a fair point when it comes to contrast with Polish though - sure, the ⟨z⟩ might look odd, but it is consistent, most of the time you can correctly predict how you're supposed to pronounce a word in Polish.