1. A telecommunication network architecture compatibility validation system, comprising: one or more processors; and one or more non-transitory computer readable media storing instructions that are executable by the one or more processors to perform operations comprising: establishing, by a first telecommunication device configured to perform a first functionality, a first communication link with a first telecommunication network that includes at least a first telecommunication hardware technology (THT) and a second THT; performing, on the first telecommunication device, a first test protocol to validate compatibility of the first functionality with each of the first THT and the second THT; subsequent to the performing the first test protocol: establishing, by a second telecommunication device configured to perform a second functionality and the first functionality, a second communication link with a second telecommunication network that includes at least the second THT and a third THT; performing, on the second telecommunication device, a second test protocol to validate compatibility of the second functionality with each of the second THT and the third THT; and executing, on the second telecommunication device and by a legacy protocol implementation module, a legacy test protocol to validate compatibility of the first functionality with each of the second THT and the third THT; storing performance metrics, corresponding to the legacy test protocol, that include at least passing criteria associated with compatibility of the first functionality with one or more THTs; and determining whether a performance of the first functionality, by the second telecommunication device based on the executing, meets or exceeds the passing criteria with respect to each of the second THT and the third THT; and in response to determining that the performance meets or exceeds the passing criteria, assigning the second telecommunication device a passing grade with respect to the first functionality; or in response to determining that the performance fails to meet the passing criteria, assigning the second telecommunication device a failing grade with respect to the first functionality.