我给你摘引一段夸克《大全》的原文中关于现在完成时表示发生在不确切的过去时间的事件的叙述：P. 193

Variants of the indefinite past meaning
4.21 In reference to a single event in the past (meaning (b) above), the present
perfective, particularly in BrE, is associated with three implications or
connotations, each of which may or may not be applicable in a given
instance. These implications are (i) that the relevant time zone leads up to
the present; (ii) that the event is recent; and (iii) that the result of the action
still obtains at the present time. ... ...

... ...

The third connotation, that the result of the action still obtains, applies to
dynamic conclusive verbs (cf 4.33-5), ie verbs whose meaning implies the
accomplishment of a change of state:
The apples have all been eaten.
My mother has recovered from her illness.
Have any of the visitors arrived?

夸克明确告诉我们，现在完成时表示过去动作的结果现在依然存在，这种用法适应于动态终结性动词。

那么，你相信夸克说的，还是张满胜老师说的。

把一个静态动词的现在完成时解释为过去对现在的影响，只见于中国人写的书中。这是对现在完成时用法的曲解。