Let's face it, people: Hacking is boring to watch.
I'd concur with that - for most people, IT work is both boring and difficult to grasp. Part of it is laziness and stupidity, but it'd be unfair to place all of it under that umbrella - lots of what we do involves having some understanding of a dozen different other concepts that aren't immediately obvious.
I just watched the episode.(spoiler warnings) For the reasons stated above, I'll cut them slack for having the malware code glow red in their visualization - malware isn't always clear. However, I won't cut them slack for things like saying that game consoles have unique identifiers that enable the console companies to track pedophiles, while simultaneously showing the bad guy being tracked by that system where a bad guy is both smart enough to hack the firmware of baby monitors and dumb enough to use a system that could easily trace him that way, especially AFTER he becomes aware that the FBI is after him. I'll cut them slack for the concept of the baby monitor hack - its got its own list of messes, but y'need a story somewhere. I won't cut 'em slack for having the password tattooed on one of the guys - they're running that kind of operation, and they're never going to change the password? Not even partially obfuscate it by adding zeroes to single digits where everyone knows that you don't type the zeroes? On a more practical note, is that guy guaranteed to be there all the time so they could reference the password? Bonus round: the guy showed a holographic representation of a cadaver...because that was really necessary and couldn't have been done with a garden variety photograph...
At least for me, the general list of things I'm willing to overlook:
-UI mockups. CLI output only makes sense if you know what you're looking at, and the last thing anyone wants is more expository dialogue that doesn't advance the plot.
-Simplifying of IP addresses and their "tracing". I've seen enough Google Maps dots on machines without GPS to know that it's at least "close enough", unfortunately. "inadmissible in court" doesn't necessarily mean "useless", and again, we need a plot device.
-Character tropes. I don't look like a stereotypical nerd (no beard, not overweight, no glasses, don't live in the basement, don't have a game console), but Hollywood's got their rack of characters: If there's a white male, approximately 50 years old, and isn't the father of another male character, he's the bad guy. If there's a good looking white girl, she's probably someone's love interest. If there's a mother, her role is, generally, "mother", unlikely to do anything to truly advance the plot independent of her maternal context. Hispanic guy on a motorcycle = gang member. Dad: clueless and aloof, though sometimes has a single pearl of wisdom. The list goes on, and though I'm not a fan of that being the case, it's not "computer techs at the expense of everyone else", and we've got characters like Skye, Chloe O'Brien, and Jake Foley that were generally positive, rounded characters.
Things I won't give a pass on:
-logic fails, especially if I'm cutting slack for a part of one.
-unreasonable expectations of technology.
-unreasonable expectations of people (i.e. "make the situation dire enough, and time will never be necessary").
-simplistic love triangles (much as I love Fitz and Simmons, the "because they're both science" reason is annoying).
-nonexistent database relations - "show me a list of 40 year old females in Spokane, who are of Irish descent and whose great grandparents came through Ellis Island in 1899 that have bought P90X and are allergic to gluten."