[lbriner]

Because there will be people for whom any changes would massively affect their ability to do their work/business who would not simply accept something as comprehensive as GDPR.

As the OP article says, even if not perfect, why not start here and make amendments later to tighten things up i.e. something is better than nothing. The real problem is that legislation is glacially slow and expensive to put into law which is good (to stop kneejerk laws) but also bad since it doesn't allow you to pass the 90% that is probably agreed and worry about the sticky bits later.