Nitin
There are many CA's who make the article work like a personal servant or peon, but this thing happened when the first batch of CPT students passed out. The result was humungous. Almost 67%!!! & there was shortage of CA firms to absorb them. Many students got articlehsip in the firms which were not of their choice but they had to continue articleship anyhow. ICAI should have thought of such shortcomings.
But now the situation is totally different. Now u might see vacancies in the CA firms as the supply has been cut down due to the introduction of IPCC scheme. Now u can get the articlseship in a comparatively good firm. In fact now the CA firms are ready to pay more stipend.
Regarding the work which u mentioned it all depends on yourself. In my previous firm other articles used to do such work but i used to oppose the same. So he didnt give me such work as i used to opppose such work. The point is that if u do such kind of work without opposing it then there is no use of complaining/regretting about the same.