The emergence of Terahertz (THz) communication holds promise for enabling high-speed wireless data transmission, particularly in dense urban environments where spectrum congestion is a pressing concern. It is also regarded as a pivotal technology for the evolution of 6G networks, primarily due to its capability to offer ultra-wide bandwidth. However, harnessing the potential of THz frequencies requires innovative solutions to overcome the inherent challenges posed by channel characteristics and hardware constraints. The phenomenon of beam squint presents a formidable challenge for traditional wideband hybrid beamformers when applied to ultra-massive multiple input multiple output (UM-MIMO) systems operating in the THz band. This challenge is particularly pronounced due to the consequential beam gain loss, hindering the optimal exploitation of the vast available bandwidth in this frequency range. To address this issue, a cutting-edge solution has emerged in the form of delay-phase precoding (DPP), aimed at efficiently mitigating the adverse effects of beam squint. Through extensive simulations and analysis, the effectiveness of the DPP technique in enhancing the overall performance of mMIMO–THz systems is demonstrated, providing valuable insights for future THz communication system designs. In this study, the evaluation focuses on the spectral and energy efficiency of the system as performance metrics.