I see personally capitalism as a much great determent to human relationships 
I don't - but let's not get into that, especially as it would be off-topic.
Electronic communications technology of any and all kinds interferes with human relationships only if and to the extent that particular humans encourage or allow it to do so; the kinds of human that remain aware of the on/off switch, maintain their conversational skills, continue to meet people in real life and write emails as though they were writing letters using pen, ink and paper are, as a rule, unlikely to find that their interpersonal skills and relationship forming capabilities become compromised by the presence and use of such technology.
Not everyone feels the need to use all such available technolgy in the first place, nor does everyone need to use every facility that each piece of technology offers; I, for example, have only ever used mobile phones to make and receive calls and, in more than 15 years, I've never felt the need to make use of the increasingly immense range of other facilities that these devices offer. I watch television only when there is something that I particularly want to watch and I never have any electronic devices switched on and functioning other than when I actually want to use them (apart, of course, from computer equipment which remains switched on permanently so that it is both ready for use and able to receive communications at all times).
Provided that any and all of these facilities are regarded and used solely as peripheral enhancements to life rather than as substitutions for or improvements upon any aspect of it, the risk of interference with human relationships should remain very low and all should be well.
Best,
Alistair