Adobe is worse than scammers. Scammers at least have the self realization that they are scamming. Adobe will steal your money and huff on the fumes that they are providing a valuable service by letting people open PDFs.
I recently downloaded their PDF reader (because it's the only app which allows for digitally signing a document with a visible cryptographic signature) and it's 400 MB in size. In no world should a PDF reader be that large.