No, the Ryzen 2600 wouldn't cause a bottleneck with the new RTX 3050.
No, the Ryzen 2600 wouldn't cause a bottleneck with the new RTX 3050.
It's mainly about handling performance; the 2600 handles most tasks smoothly, except for competitive games like CSGO and Valorant. That's typical.
I wouldn't recommend pairing a 2600 with a 3070. That's the equivalent of pairing it with a 2080 Ti, and there's a reason the recommended CPUs for the 2080 Ti were the i7 8700K, i7 9700K, and i9 9900K - Zen+ just doesn't cut it for that level of performance. You'd need at least Zen 2. The 3050 is absolutely fine. The 3060 is okay, too. But the 3060 Ti is probably too far and the 3070 almost certainly is.
It varies by game; for CPU-heavy titles like Minecraft or CSGO, performance issues are likely, but in many cases it should run smoothly.