Fwiw, here are the typical reasons a cigar can be squishy:
1 - Cigars are too moist - either due to youth as most cigars are really too wet to smoke in the first 45 days without wicking or due to them being stored at too high a humidity. The excess moisture results in expansion in the bunch and the binder due to the higher moisture content more readily allows for this expansion.
2 - Cigars are underfilled - this of course is very subjective as every maker has certain desires for the draw. I know personally if I had to choose between a cigar that went slightly soft vs one with a slightly tight draw, I would go for soft 10 out of 10 times.
3 - Cigars are constructed with almost exclusively heavy materials - when a cigar is made entirely of viso and ligero, particularly Nicaraguan, leaf varieties then there is many more larger air channels in the bunch than a cigar with a base seco added to the mix. Many really strong cigars exhibit this tendency to go soft for this reason.
4 - Method of construction - cigars that bunched exclusive in an entubar style with a single binder leaf can also have a tendency to go soft.
Hope this helps,
STS
Prez, Drew Estate