Having owned/used/borrowed ALL the greats and weird ones (Moogs, Junos, EMS, etc) I can safely say that "close enough" is good enough. I prefer not using a computer for music making these days because I already crunch 8 hour days debugging load balancer configurations ... I just can't give another 8 to the PC at the end of the day. It's so relaxing having a dedicated machine that is stand alone to tinker around with after dinner.
Let's face it, our dreams of becoming the next Trent Reznor isn't happening. If you're new, yeah use a PC and some Free VSTs. If you got the cash, sure go buy something. What's important is how YOU feel about it. I understand it can be fun comparing SERUM patches to a real ARP 2600 but in the end ... it pretty much does not matter and as long as something as 2 or 3 OSCILLATORS you can figure it out.
Does anyone really need anything more than Synth 1? https://www.kvraudio.com/product/synth1-by-daichi-laboratory...
If you read this far I'd highly recommend looking at these phone apps if you are new to music making.
KORG GADGET (surprisingly good) KOALA SAMPLER (incredible mpc style sampler)