Don’t really think anyone can say that 100% absolutely.
Look at the country and as a country we sure deserve chastisement. Look at the world and we sure do deserve chastisement.
Hard to absolutely rule it out given the evidence.
We deserve a lot more than just chastisement, IMO.
Many people think that the OT continually portrays God as being a God of judgment, zapping any sin as soon as it happens.
However, after reading the OT a few times I began to see how much God did NOT want to judge Israel. He gave them warning after warning about continuing on the path they were on. Much of those warning came as things like attack from enemies and plagues. He warned them time and again of impending judgment if they did not repent and all that was to try to get their attention to get them to stop sinning.
There is precedent for it.
So, no, I can’t say for sure that it is not chastisement, but I strongly suspect that it’s more attention getting to get us to repent and turn to Him again before he finally has to bring down judgment.