No you could not be more wrong. Its not the same, low fps behaves differently on a gsync/freesync enabled monitor than it does on static refresh rates. You dont get more blur the lower the fps goes on static refresh rate(lets assume in this example vsync is off), sure you get tearing which is not that exciting but the blur stays the same, where as on a gsync/freesync it increases dramatically the lower the fps go since FPS= effective hz. Now this is not a flaw in gsync/freesync but a limitation due to how the monitor works by holding an image for a longer period of time also know as image persistence but it still translate to the experience of using gsync/freesync at lower fps and this is where you as a user have to choose. Can i live with the blur and be happy there is no tearing? or are your preferences the other way around.
I know i hate blur more than i hate tearing as it makes my eyes strain a good deal and therefor i feel like its very important to present variable refresh rate in a correct light by listing both the positive(which there certainly is) but also the negatives because we as users are not the same and not everyone is bothered by the same things which is also why i think that just recommending gsync/freesync as the holy grails is wrong.
Now your second point about getting 60-144hz with gsync/freesync, i have to wonder, have you tried that experience? one second completely smooth 144hz? the next second 60hz or 70hz? due to your gpu not being able to keep up? That experience is certainly not one i like and i rather prefer locking the fps to 70-80 max then to avoid that spike. This is especially true if i play shooters where consistency is key. Again you may be "immune", or perhaps the correct term is insensitive, to these unpleasant side effects but some of us are not and for us, myself included, gsync/freesync isn't always the key. Example i prefer to run 144hz static refresh right now and play BF4 uncapped giving me around 250+ fps which is such a treat for mouse response and tearing is not visible(it is of course there by logic). Now are you going to try and convince me that gsync is always superior in every scenario?
Now let me end this by giving an example of where i find gsync/freesync to work very will. In the 50ish to 70ish range where you dont experience frame drops of more than 5-10 but minimums are above 50. So for example The Division was a treat with gsync on for me after i had tuned a few settings to raise the minimums above 50. It is important for me to stress that im not against variable refresh rate technology but i do think its very important to show it in the right light with both positives and negatives since there's still a nasty premium for most users if they want to consider the option.