Hello,
in my opinion, yes, absolutely, the pipe / bends / fittings look very dilapidated and definitely need to be replaced immediately in my view, the hemp connections also no longer look really trustworthy.
In the last photo, there is a screw connection visible if I am not mistaken, this is also in accessible rooms and according to [a.a.R.d.T] no longer permitted.
So please immediately call a gas specialist and have the pipe replaced!
In case of gas smell, please turn off the gas valve immediately and do not use any open lights / switches / fire and ventilate!