TSME and SME can technically both be enabled at the same time, but
there is no use in reporting one as enabled and the other disabled.
They share the same attribute, and so if one is enabled, obsolete
it in the other plugin.
Granted; this is a bit of a confusing experience. You have two attributes
that mean similar but not the same things. You can technically have SME
and TSME both enabled at the same time, or both disabled at the same time.