Ho provato a cercare le "fonti alquanto autorevoli" a cui si riferisce golfox sul forum di AlterVista dal quale è presa la "citazione" ma Google non restituisce altri risultati.

A quanto scrivono su http://www.phpro.org/articles/The-Future-Of-PDO.html ...

The future direction of the development of the PHP PDO, and PDO-MySQLND extensions is gaining momentum as a flurry of activity from developers, most significantly from the SUN/MySQL development camp.
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A new new push to further the development has seen SUN/MySQL lead the way in developing the missing test suite for the PDO driver.
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The push from SUN/MySQL to further PDO development is a sign of the larger number of developers within the PHP community who are currently seeking to further all RDBMS extensions.
... a me non sembra che PDO sia ormai sul viale del tramonto.