When I read technical literature, I often have a feeling in some parts articles are omitted, which may make sense as nowadays English is widely used by non-natives, which in turn leads to the language simplification.
However, not being native, I cannot claim that..
You're correct, I used to proofread Japanese and Korean chemists academic papers and decided to get out of the business because it was too frustrating -- you have to rewrite some peoples' English, not fix it up. Lots of academic papers out there have A- English in them.
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