1) What could be implications of this? Will we still have internet access?
The implications are that some of the TV, meteo or military satellites may get damaged at some point sooner or later. Or Elon Musk's internet-to-be chain of satellites. Most that affects
you would be TV and maybe meteo. The problem is that any future launch into space - big or small - poses the risk of colliding such debris and getting damaged.
However, there's already a lot of debris up there -
some say 500000 objects, some say that's
more than 27000.
Your internet is almost certainly terrestrial, so it's not affected at all.
2) How will it impact Bitcoin?
Not at all.
3) What would be best strategy to prepare for a world with impassible space debris surrounding orbit?
Since we still want to send things out of Earth, sooner or later projects like
this or
this have to become reality and the debris has to be cleared to acceptable levels.
Which assets will be a safe haven?
... really?!