Why does it align for so many events and people nicely, but here we see a massive contradiction?
The best you could argue for is that E-V13 and J-L283 were both in the more Southern Balkans, but only E-V13 got nearly erradicated (why the difference?), while the more Northern clades stayed well and alive for yet another 200 years to the Dacian wars and Germanic invasion of the Carpathians-Western steppe.
Again, E-V13 goes down from a fairly important, steadily growing haplogroup of Europe to nothing in the Roman period, whereas J-L283 got hit too, but 200 years earlier and growing well right when E-V13 doing bad, while the Carpathian zone/Dacians get ravaged. This would be a lot of coincidences to say the least.
This is how synchrony looks like for Germanics (starts with Urnfieldisation):
I-M253 are in complete synchrony between 3.100-2.000 BP.

Slavic being split along two major branches of R-Z280, one expanding with R-M458, the other with I-CTS10936. Note how the up and downturns for the respective main founding lineages of Germanics and Slavs are nicely in synchrony.
Then consider the much smaller area, much less diversified, for J-L283, and look at the truly massive discrepancy. I'm not saying I know the answer, but that's surely absolutely significant. J-L283 grew with Romans, E-V13 almost completely crashed, E-V13 grew better with Germanics and Slavs, J-L283 rather not.
And the zero growth in the Roman era means the conditions for the J-L283 lineages must have been very different, significantly better, in the Roman sphere. If you think about it, we won't see anything different, because we might find a lot more clades which expanded with Dacians, Celts, Germanics and Slavs elsewhere, but so much more Albanian E-V13 subclades in that time frame? After that good testing of Albanians on YFull? Rather not.
You have to explain the discrepancy. Probably you have a better/other explanation than Thracians and Dacians suffer more than Southern Illyrians, but I would prefer to discuss alternative explanations or additional data instead of criticism as such.
Its a crude and probably not "scientific enough" method, but its good enough to detect and describe major events and population movements, like those of the Germanics and Slavs. So it has to mean something for the Balkan lineages as well.
I'm just applying the same crude method to all lineages I'm interested in. Its not to "manipulate the data" for any kind of purpose. I just tried to visualise with actual data what I did recognise as a pattern on YFull already, that most E-V13 lineages have specific founding periods, most dating back to the LBA-EIA.