There's only one problem with synthesizer music or looped music in general. Without a human sounding element, or something warm and organic to match it against it rapidly starts to sound like early synth experimentation by Wendy Carlos - which is truly old hat by this point.
Especially since synthesis was once the province of people with banks of electronics and spaghetti strands of patch cords playing multiple extremely expensive machines at once - but is now well within reach of even the phone someone carries around with him.
Bands like The Eurythmics solved it by matching the lush, rich sounds of 80s era synths with a very beautiful voice in Annie Lennox. Depeche Mode likewise did the same by matching guitars and Dave Gahan's epic crooning to the mix.
There's nothing inherently wrong with pushing synths or samples to their own limit for their own purposes. Yello made a living out of creating sound collages through any of a number of technolgies, and what is synthwave but an homage to Giorgio Moroder by providing walls of absolutely drippingly lush analog and FM waves?
But when you stick forms of music together to counterbalance each other, part of the trick is finding compatible pieces, but complementary ones.
Some artists took a cue from some experiments, creating a style that got called "Electro Swing".
Experiments including notably a famous one in the 1990s with a Calvin Klein ad featuring octogenarians crowded around a DJ mixing scratchy 1920s swing with a more modern beat. From that interesting idea (old people being retro but hip) or by simultaneous invention people discovered that the straight 4/4 of a metronome drum machine mates perfectly with scratchy vintage recordings. There's something in that wax technology that gave us scratchy, crackly but beautifully warm sounds - sounds that we can't quite completely listen to because its articulations and high ends are lost, as are the bottom. By adding a modern click and bass track, it "fills out" the lost frequencies, and the sample beautifully rounds out the click track.
And of course, with modern technology, we can reproduce any of a number of effects people used to try to change sounds. Trumpet players used mutes and toilet plungers to radically change the sounds of the trumpet. Singers sang through small brass megaphones to make the voice sound hollow and breathy. People went out of their way to find "tinny" "honky tonk" pianos. Mutes are still in use on trumpets, but we can use any of a number of filters and gates to change singing tones and play with piano samples to get a slightly detuned bright sound.
Electroswing is not exactly the best term for it, because most of the music in the genre tends to the 4/4 Tin Pan Alley style stuff rather than the swung eighth feel of proper swing. But there are bands who have sampled vintage records and mated them to modern, peppy drum machine lines and made some quite catchy tunes. Trilly clarinets, growling trumpets, chunky pianos and tinny sounded crooners are cool again.