Right. realme 12 Pro+ is coming with Telephoto camera.
Yes. Effectively, only 1 OS update. It's the same problem every year with Redmi Note Series.
7 gen 3 is better than Dimensity 7200. So basically Realme 12 Pro Plus is more powerful(One Plus Nord CE 5 is coming with same chipset, One Plus Nord 5, snapdragon 8+ gen 1).
Realme 12 Pro Plus
Specs:
-6.7x" 1.5K Tianma T7+ / T8 LTPS OLED Display
-Qualcomm Snapdragon 7 Gen 3 SoC
-50MP (OIS, IMX890) + 8MP (UW)
+64MP (OV64B, 3X-Tele) Rear & 32MP front camera
-5000+ mAh Battery | 100W charging
So basically far better than Xiaomi. If you remove bloatware through adb, Realme is far better phone.
Even though, since last one and half year, there are no issues with motherboard with Poco and Xiaomi/Redmi phones, their experience has been subpar. Get Redmi Note series only for custom rom support.
Poco X4 Pro/Poco X5 Pro/Poco F5/Poco F4 are still best with custom rom support. Noone even comes close to these devices.