So was Term-X yet he was an absolute buffoon. Again, I would sincerely question your mate's rational if he though Lampard's Derby was a defensive team. They were known in the championship for their high pressing, energy, and quick transition. Lampard took one of the youngest teams in the league to a play off final, and was a GK error away from being promoted to the premier league.
Maybe your mate was referencing Gary Rowett who was manager prior, (even more defensive than Tony Pulis) as for the life of me I cannot fathom such a comment be made after Lampard's appointment. Literally night and day difference in tactical styles.