Yes, only two lines, but ~52 miles once both extensions are complete, which (according to Wikipedia) is comparable to Denver's LRT system which has 8 lines.
If we really wanted to, we could claim 4 lines once the extensions are open by running an EP to MOA service plus Brooklyn Center to St Paul service. That's just an operational choice though. The actual trackage length is pretty decent for a few decades of investment.
I think Denver's A Line should be included as part of the LRT system. While it's considered commuter rail it has light rail levels of service (every 15 minutes in both directions throughout the day).
The Green Line Extension has taken way too long to be completed, and thanks to poor decisions made a decade ago it's taking much longer than it should have to complete it. As for the Blue Line Extension I'm not holding my breath on that until they actually begin construction. Seems like they keep making the planning process longer and longer to reach an impossible goal of pleasing everyone along the route. Same for Riverview.
On the aBRT side we've done a decent job of rolling those out, though it's frustrating that for some (all?) of them we have to wait to coordinate with road projects. With BRT we were told it would be quicker to roll out than light rail, and that hasn't been the case.
All that is to say with the huge success we had with the Hiawatha Line/Blue Line 20 years ago we should've taken full advantage of it and moved the other transit projects forward as quickly as possible. Instead however time was wasted kicking the can down the road, and a pandemic happened, ridership plummeted leading to people being transit agnostic, inflation has gone way up, the stigma around transit (and the problematic people causing this stigma) has gotten worse, all of which has made it much more difficult to get these projects built. Yes there needs to be a process for these projects, but it should not take this long.