I think it's "people who write them $100,000 checks versus people who don't". There is no true collaboration when one side of the argument is shoveling piles of money in to their lap and then we are expected to encourage them to see our side.
For some opinions, you can't find anyone who publicly holds them who isn't being paid in some way. The best you can do is find a thinktank that is also being paid to support the idea, but which is also being paid to write the apologia that others will repeat parts of when confronted. If you hear politicians repeating the same phrases, google them and you might find the original.
A supportive WaPo/NYT oped will also be written by the thinktank (often signed by a congressperson or celebrity), but if they can't quid-pro-quo into the editorial pages of one of those two, they'll still have a half-dozen on Politico/The Hill that will lead you to a paper.
Which law enforcement agency is writing $100k checks? There are no commercial interests in Section 702. In fact, if any, they would be against 702 (as Verizon doesn't like having to deal with it).
Said more directly - powerful people want more law enforcement against the common people and they will lobby for it.
Law enforcement (both agencies and law enforcement personnel collectively separately from any agency) absolute do lobby legislators directly, and the public, for themselves.
Oh sure, NSA's budget just sits there never to be used. It's definitely not being used to pay contractors, buy equipment, or build data centers contrary to what we learned from the Snowden disclosures. /s
I've lobbied in a variety of countries and stateside political entities successfully, and in the process I realized everyone thinks their cause is just. My ability to bridge consensus is more novel than the ideologies that have gravitated to the far extremes of their respective parties and will never gain consensus. What we have in common is that we all appreciate the influence that surpasses the popular vote, in places we could never be registered to vote in to begin with. So my causes have been enacted in some places, and people doing the same thing believe the same thing about their causes. Nobody sees themselves as the "shadowy foreign influence" in the other country's political process, but sure, the Michael Moore documentary 10 years too late will present it that way.
In this case, I'd like to know what the proponents believe about this particular cause to even do. What are they trying to accomplish beyond "unaccountable secret government court to piss off technologists that have a hobby of paying attention to it"?
Pretty sure nobody cares about what "technologists" think about it. Technologists will do what they're told, for pay. "Unaccountable secret government" is an obvious aim in itself, for people who think (or know) that they will be insiders.
They believe these powers are critical for counterintelligence and foreign influence investigations. I think that's not true, but I'm pretty sure they actually believe it.