More specifically, I would like to know whether the gameplay rules and
assets can be used to create campaigns that happen later than "The
time of the Red". My concern is that the gameplay and rules are
restricted to 2045, and couldn't be used on a 2071 setting.
I would like to know whether the rules and pre-made weapons, roles and
lifepaths be used to create a campaign in 2071, or are they too strict
or era-dependant to be used on different eras.
Cyberpunk was originally built using the Interlock system, that was also used for Mektzon Zeta, a completely different roleplaying game and was 99% compatible with minimal conversion. Later they worked on the Fuzion system which was a splice of Interlock and HERO system, again with an emphasis on convertibility, such as for their Bubblegum Crisis RPG.
Philosophically, R. Talsorian has never encouraged people NOT to use their mechanics for a campaign due to some minor or even major change in timeline, which is very different from the D&D timelines from 1st to 5th edition where game mechanics change and the backstory also changes (c.f. forgotten realms).
So your question boils down to "Can I use the rules and equipment from Cyberpunk Red 2045 in a campaign that takes place 24 years later?"
The answer is mostly Yes.
The clothing, equipment, and NPCs will all be 24 years older. Major changes that take place in 2071 will be political, and to some degree, Net based technology changes. How you resolve things like:
- attack rolls
- dodge
- skill resolution
- social checks
- driving a vehicle
- doing a black market purchase
- calculating the damage of a firearm
- resolving how your damage interacts with armor
these and most other rules will not need to be changed. Only a handful of things, like upgraded guns (we still use 1911 .45 ACPs after 111 years), and any other small improvements will have to be revisited.
But overall,
Human beings still purchase pants and put them on one leg at a time.
Solos still buy guns and ammo and smartlinks.
A 2071 campaign would most likely be a "supplement", but there's no need to scrap everything you learned from Cyberpunk Red. As the Game Master, it's up to you. Mechanics have little or nothing to do with what year it is. That's just setting gear, customs, and NPC write ups. COOL is still COOL, and bullets still kill.