I find it hard to believe that anyone involved - host or user - isn't aware that E_STRICT is on its way.
Honestly, I only heard about it in the last few weeks. And I run an open source project based on PHP. I do PHP for a living. The average web host and/or webmaster does not keep up with the future changes of PHP.
You really give web hosts too much credit. They will move from Fedora Core 1 to some distro that has PHP 6 on it directly. They don't update PHP along the way.
I am not saying I like this or that it is good. I am saying that this is the way things are. If you want to ignore these users, that is fine. But, I just don't want rose colored glasses making you believe that everyone that uses PHP knows what is happening to PHP.
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Brian Moon
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http://dealnews.com/
Its good to be cheap =)