Bye! Have a nice life.
"Late security updates, no sign of Android Pie" are pretty minor issues - and you won't do much better with anyone else - compared to the other problems with this phone.
And given all the bugs and quirkiness of this phone, are you sure you want them rushing updates?
I'd rather they took their time and tried to get it right this time. It's hard to care about being first with Pie when the phone is so frustrating to use at all.
I'll just mention all the problems I was having with my nokia 6.1.
Camera : The camera was super buggy. The quality of the camera was very low. Beside the quality, the camera app sometimes froze while taking a picture. Sometimes it would take a lot of time to open. Using gcam, I faced a problem where taking a picture with the back cam resulted in the phone hanging for 2-3 minutes straight. I used different gcams and all had the same result.
GPS : The gps was buggy. I always had to restart my phone in order to get the gps to work.
Hanging issues : Sometimes while using the phone, the phone froze. I had to wait 4-5 minutes even to hard reset it. The first time it happened, I was devastated. I was only using whatsapp and it froze. I thought maybe it's dead.
Software issues : I faced a software issue where sometimes turning the screen on or switching from one app to another resulted in just a blank display with a greenish tint (the tint depends on the wallpaper. since I was using a green wallpaper, the tint was green). Then I had to turn the screen off for a few seconds and then turn it back on.
Fingerprint Sensor : Nokia used a very cheap a** fingerprint sensor in this phone. It only worked about 4-5 times out of 10. The speed of the sensor was slow as well.
Wifi issues : The wifi on this phone kept disconnecting and sometimes it wouldn't work even when connected. I have a good wifi connection at home but due to this problem, I used mobile data most of the time on my mobile.
Software updates : Nokia made this device and then forgot about it. Google releases security updates in the beginning of the month and this phone received it at the end of the month.
The biggest issue for me was the camera. Photography is my hobby. But I was so displeased with this phone's camera that I mostly avoided taking photos. The front cam was bad as well. I didn't like it at all. Using Gcam, I was able to get decent photos with the front cam. Also, the slow updates also made me hate Nokia a little bit more each month.
The only thing I liked about this phone was the build quality and the design of this phone's back. The front had large bezels by the standards of 2018. I might have kept this phone if only they had released Android 9.0 in time. But the lazy a** folks at HMD managed to F up that too.
I am so very glad that I sold my Nokia 6.1 and bought a new device.
I have most of those problems and some others too and they are very frustrating.
But you're upset that the security updates take a few weeks?
I care very much about security and given what we have seen from Nokia I'm worried that they won't keep their promise of 3 years of these, but frankly I think that every 2nd month would be fine.
And given how buggy their phones are, I want Nokia to start taking more time/care with their updates - not less. Let's not forget that Google too often releases buggy updates, so if Nokia gives a little time for the bugs to be found in Google's software then we will all benefit.