No. Simply not, Wisdom. A deadlift of 80 kg is 172 pounds. That is a lot. Can you lift that? Warm up first. I know many, many MANY people who cannot easily lift, or lift at all 80 kg. Nearly every grandmother, many women and many men under 150 pounds. They are not handicapped - they are weak. "Very Weak", as the book says.
Worst strength possible - for a starting character. But not crippled. You need Disaster Strikes to do that.
Note that being actually physically handicapped -is- covered in game. You can start at Ref 2 and go to Ref 1 with Disaster Strikes, for example.
I don't know what you mean by a CHUD, but an actual CHUD is horrifically disfigured.
In order to that in-game, an Accident, under Disaster Strikes, will reduce ATTR by 5, well below 2.
Can you go below 2 in-game? Yes. Empathy does it all the time. So can wounds, diseases, etc.
IQ tests are pretty worthless. Averaging from a poor concept isn't worth anything either.
Try the system itself. Int 2 means you have difficulty remembering and observing Easy tasks - without an applicable skill. So 8 or better. An "average" Int of 5 would need 5 or better on 1D10 - not really the difference between your IQ 40 (INT 2) and 100 (INT 5) in any game application.
It is not safe to say that below 3 is handicapped. That's your perspective, I doubt R.Tal would agree. Mentally handicapped people, without getting all politically correct here, have issues that are more complex than the CP2020 INT stat measures. All INT does is measure, "problem solving ability, figuring out problems, noticing things, remembering information."
Someone with Down's Syndrome has mental challenges - and physical ones- that dwarf the ability of a simple 0-10 stat system to measure. And any silliness like mere IQ tests.
On a related note, by your scale at 20 points per, INT 4 would be 80 IQ, ten above what used to be marked as "retarded". I would never tell a player their character was retarded and certainly not at INT 4. Learning disability, self-absorbed, poor retention of facts, sure. But at INT 2-3 they can still be creative, intuitive, funny and emotionally intelligent. Is that mentally handicapped? How would we measure that? The handicapped can be those things as well. INT is..yeah. Let's stick to the book definition and apply it to in-game skill usage.
Edit: oh, on the subject of re-rolling a 2? Only with the "Fast" dice generation method. Otherwise you are free to put points wherever you want them and there is nothing in-book saying at 2 or 3 you're "handicapped" if you do so.
Good thing, otherwise Chris would be Luck Handicapped.
Edit Edit: Hey, 60 points for character gen is Supporting Character. Fuck That. I'm now fully in the camp of "70 pts or better".
At least be the star in your character's story, fer chissakes. "Supporting Character" my balls.