in other words:
Two roads crossing.
To avoid an accident you need to slow down. --> and take care of the others (filter).
Just slowing down won´t prevent from an accident.
In case there is another car nearby you may accelerate or slow down to avoid contact.
Crosstalk can affect the signal quality of the disturbed signal i n different ways. Obviously by changing the logic state if the receiver threshold is exceeded. But if the the disturbed signal has slow edges, even a small crosstalk level can shift the effective edge time and cause jitter.
There are several parameters determining the crosstalk effect. Ratio of even and odd line impedance, line length, source and load impedances, signal rise time.