Coefficient alpha: A useful indicator of reliability?

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Confirmatory Factor Analysis and Scale Validation in Communication Research (2005, background): “Researchers also want to show that scales are reliable, and to meaningfully interpret reliability estimates, unidimensionality is a prerequisite (Shevlin et al, 2000 ).”
Evaluating the Perceived Stress Scale among UK university students: implications for stress measurement and management (2019, background): “Determining the most suitable latent structure of a measure is an important precondition to evaluating its reliability, as to treat a unidimensional scale as multidimensional can lead to inaccurate reliability assessment (Shevlin et al. 2000).”
Self‐Construal Scales Lack Validity (2003, background): “3 Shevlin et al. (2000) note that EFA is not sufficient to document dimensionality.”
Interpretaciones del Coeficiente Alpha de Cronbach (2005, background): “Podemos encontrar estudios de simulación sobre la distribución muestral del ̂ en Zimmerman et al. (1993), Shevlin et al. (2000) y Duhachek y Iacobucci (2004).”