True to a point.  Still in any properly configured system the amount of writing done to swap and temp file shouldn't materially contribute to wear leveling.   All SSD have a finite amount of writes, but wear leveling, and overbuilding (480GB SSD likely has 500GB to 550GB of actual flash) mean they should work just fine for years.

Some back of napkin math:
480GB SSD (w/ 500GB actual flash) and 500K avg writes per cell.  Swap file wites per day 1TB (very unlikely).
Gross write throughput = 500 GB * 500K = 250 PB (1PB = 1000TB).

In 10 years swap file writes ~= 4 PB.  Roughly 2% of drive's rated write capacity.  It is unlikely someone swap file usage aproaches anywhere near 1 TB per day unless they randomly open and close applications on a near continual basis.  When drives were much smaller, had low write ratings, and system memory was more expensive (greater % of paging) it was more of an issue.

And totally off topic:
At work, our analysis server's storage array just got upgraded to 20 250GB Enterprise grade SSD.  Utterly mindblowing performance on complex simulations.  It provided more of a performance boost then increasing the RAM from 32GB to 64GB and cost less.  The coolest part is the chassis for the external array is only 2U and has 32 2.5" hotswap bays.    It is only a matter of time before SSD replaces everything (except maybe nearline storage).  The only con is cost and that is falling by about 50% every year (faster than Moore's law).