Yes, I agree with you. But these were old samples just to see scan speed and notifications and that kind of stuff, not really to test the effectiveness of AVG. Probably Avast or AVG stable releases would have cought the malware, but this beta release wasn't updating (don't know why) so I ended up in a encrypted VM.I wouldn't really expect a standard AV to stop Ransomware to be honest. CS has showed videos of top suites getting bypassed by ransomware let alone a standard free AV. I believe BItdefender and Kaspersky were bypassed in CruelSisters tests and they're full suites with all kinds of modules.
I like the new user interface, it is a nice mixture of avast and avg, (more avast than avg) and it is very light on the resources.